现在 抖音 是个很火的短视频平台，上面有许多不错的小视频。今天教大家怎么用PHP技术来获取到抖音上的的内容。
1：打开抖音选中你认为好的视频点击分享，复制链接，然后你会获取到如下的内容：
# 科比 愿你去的地方也有篮球陪伴，也能披着24号紫金战衣！ #动态壁纸 复制此链接，打开【抖音短视频】，直接观看视频！
这段内容就是我们进行 抓包 使用的路径。
2： 需要使用到php解析 html 类库文件simple_html_dom
创建 simple_html_dom.php 代码如下：
1 <?php
2 /**
3 * Website:
4 * Acknowledge: Jose Solorzano (
5 * Contributions by:
6 * Yousuke Kumakura (Attribute filters)
7 * Vadim Voituk (Negative indexes supports of "find" method)
8 * Antcs ( Constructor with automatically load contents either text or file/url)
9 *
10 * all affected sections have comments starting with "PaperG"
11 *
12 * Paperg - Added case insensitive testing of the value of the selector.
13 * Paperg - Added tag_start for the starting index of tags - NOTE: This works but not accurately.
14 * This tag_start gets counted AFTER \r\n have been crushed out, and after the remove_noice calls so it will not reflect the REAL position of the tag in the source,
15 * it will almost always be smaller by some amount.
16 * We use this to determine how far into the file the tag in question is. This "percentage will never be accurate as the $dom->size is the "real" number of bytes the dom was created from.
17 * but for most purposes, it's a really good estimation.
18 * Paperg - Added the forceTagsClosed to the dom constructor. Forcing tags closed is great for malformed html, but it CAN lead to parsing errors.
19 * Allow the user to tell us how much they trust the html.
20 * Paperg add the text and plaintext to the selectors for the find syntax. plaintext implies text in the innertext of a node. text implies that the tag is a text node.
21 * This allows for us to find tags based on the text they contain.
22 * Create find_ancestor_tag to see if a tag is - at any level - inside of another specific tag.
23 * Paperg: added parse_ charset so that we know about the character set of the source document.
24 * NOTE: If the user's system has a routine called get_last_retrieve_url_contents_content_type availalbe, we will assume it's returning the content-type header from the
25 * last transfer or curl_exec, and we will parse that and use it in preference to any other method of charset detection.
26 *
27 * Found infinite loop in the case of broken html in restore_noise. Rewrote to protect from that.
28 * PaperG (John Schlick) Added get_display_size for "IMG" tags.
29 *
30 * Licensed under The MIT License
31 * Redis tributions of files must retain the above copyright notice.
32 *
33 * @author S.C. Chen <me578022@gmail.com>
34 * @author John Schlick
35 * @author Rus Carroll
36 * @version 1.5 ($Rev: 196 $)
37 * @package PlaceLocal include
38 * @subpackage simple_html_dom
39 */
40
41 /**
42 * All of the Defines for the classes below.
43 * @author S.C. Chen <me578022@gmail.com>
44 */
45 define('HDOM_TYPE_ELEMENT', 1);
46 define('HDOM_TYPE_COMMENT', 2);
47 define('HDOM_TYPE_TEXT', 3);
48 define('HDOM_TYPE_ENDTAG', 4);
49 define('HDOM_TYPE_ROOT', 5);
50 define('HDOM_TYPE_UNKNOWN', 6);
51 define('HDOM_QUOTE_DOUBLE', 0);
52 define('HDOM_QUOTE_SINGLE', 1);
53 define('HDOM_QUOTE_NO', 3);
54 define('HDOM_INFO_BEGIN', 0);
55 define('HDOM_INFO_END', 1);
56 define('HDOM_INFO_QUOTE', 2);
57 define('HDOM_INFO_SPACE', 3);
58 define('HDOM_INFO_TEXT', 4);
59 define('HDOM_INFO_INNER', 5);
60 define('HDOM_INFO_OUTER', 6);
61 define('HDOM_INFO_ENDSPACE',7);
62 define('DEFAULT_TARGET_CHARSET', ' UTF -8');
63 define('DEFAULT_BR_TEXT', "\r\n");
64 define('DEFAULT_SPAN_TEXT', " ");
65 define('MAX_FILE_SIZE', 600000);
66 // helper functions
67 // -----------------------------------------------------------------------------
68 // get html dom from file
69 // $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1.
70 function file_get_html($url, $use_include_path = false, $context=null, $offset = -1, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
71 {
72 // We DO force the tags to be terminated.
73 $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
74 // For sourceforge users: uncomment the next line and comment the retreive_url_contents line 2 lines down if it is not already done.
75 $contents = file_get_contents($url, $use_include_path, $context, $offset);
76 // Paperg - use our own mechanism for getting the contents as we want to control the timeout.
77 //$contents = retrieve_url_contents($url);
78 if (empty($contents) || strlen($contents) > MAX_FILE_SIZE)
79 {
80 return false;
81 }
82 // The second parameter can force the selectors to all be lowercase.
83 $dom->load($contents, $lowercase, $stripRN);
84 return $dom;
85 }
86
87 // get html dom from string
88 function str_get_html($str, $lowercase=true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
89 {
90 $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
91 if (empty($str) || strlen($str) > MAX_FILE_SIZE)
92 {
93 $dom->clear();
94 return false;
95 }
96 $dom->load($str, $lowercase, $stripRN);
97 return $dom;
98 }
99
100 // dump html dom tree
101 function dump_html_tree($node, $show_attr=true, $deep=0)
102 {
103 $node->dump($node);
104 }
105
106
107 /**
108 * simple html dom node
109 * PaperG - added ability for "find" routine to lowercase the value of the selector.
110 * PaperG - added $tag_start to track the start position of the tag in the total byte index
111 *
112 * @package PlaceLocalInclude
113 */
114 class simple_html_dom_node
115 {
116 public $nodetype = HDOM_TYPE_TEXT;
117 public $tag = 'text';
118 public $attr = array();
119 public $children = array();
120 public $nodes = array();
121 public $parent = null;
122 // The "info" array - see HDOM_INFO_... for what each element contains.
123 public $_ = array();
124 public $tag_start = 0;
125 private $dom = null;
126
127 function __construct($dom)
128 {
129 $this->dom = $dom;
130 $dom->nodes[] = $this;
131 }
132
133 function __destruct()
134 {
135 $this->clear();
136 }
137
138 function __toString()
139 {
140 return $this->outertext();
141 }
142
143 // clean up memory due to php5 circular references memory leak...
144 function clear()
145 {
146 $this->dom = null;
147 $this->nodes = null;
148 $this->parent = null;
149 $this->children = null;
150 }
151
152 // dump node's tree
153 function dump($show_attr=true, $deep=0)
154 {
155 $lead = str_repeat(' ', $deep);
156
157 echo $lead.$this->tag;
158 if ($show_attr && count($this->attr)>0)
159 {
160 echo '(';
161 foreach ($this->attr as $k=>$v)
162 echo "[$k]=>\"".$this->$k.'", ';
163 echo ')';
164 }
165 echo "\n";
166
167 if ($this->nodes)
168 {
169 foreach ($this->nodes as $c)
170 {
171 $c->dump($show_attr, $deep+1);
172 }
173 }
174 }
175
176
177 // Debugging function to dump a single dom node with a bunch of information about it.
178 function dump_node($echo=true)
179 {
180
181 $string = $this->tag;
182 if (count($this->attr)>0)
183 {
184 $string .= '(';
185 foreach ($this->attr as $k=>$v)
186 {
187 $string .= "[$k]=>\"".$this->$k.'", ';
188 }
189 $string .= ')';
190 }
191 if (count($this->_)>0)
192 {
193 $string .= ' $_ (';
194 foreach ($this->_ as $k=>$v)
195 {
196 if (is_array($v))
197 {
198 $string .= "[$k]=>(";
199 foreach ($v as $k2=>$v2)
200 {
201 $string .= "[$k2]=>\"".$v2.'", ';
202 }
203 $string .= ")";
204 } else {
205 $string .= "[$k]=>\"".$v.'", ';
206 }
207 }
208 $string .= ")";
209 }
210
211 if (isset($this->text))
212 {
213 $string .= " text: (" . $this->text . ")";
214 }
215
216 $string .= " HDOM_INNER_INFO: '";
217 if (isset($node->_[HDOM_INFO_INNER]))
218 {
219 $string .= $node->_[HDOM_INFO_INNER] . "'";
220 }
221 else
222 {
223 $string .= ' NULL ';
224 }
225
226 $string .= " children: " . count($this->children);
227 $string .= " nodes: " . count($this->nodes);
228 $string .= " tag_start: " . $this->tag_start;
229 $string .= "\n";
230
231 if ($echo)
232 {
233 echo $string;
234 return;
235 }
236 else
237 {
238 return $string;
239 }
240 }
241
242 // returns the parent of node
243 // If a node is passed in, it will reset the parent of the current node to that one.
244 function parent($parent=null)
245 {
246 // I am SURE that this doesn't work properly.
247 // It fails to unset the current node from it's current parents nodes or children list first.
248 if ($parent !== null)
249 {
250 $this->parent = $parent;
251 $this->parent->nodes[] = $this;
252 $this->parent->children[] = $this;
253 }
254
255 return $this->parent;
256 }
257
258 // verify that node has children
259 function has_child()
260 {
261 return !empty($this->children);
262 }
263
264 // returns children of node
265 function children($idx=-1)
266 {
267 if ($idx===-1)
268 {
269 return $this->children;
270 }
271 if (isset($this->children[$idx])) return $this->children[$idx];
272 return null;
273 }
274
275 // returns the first child of node
276 function first_child()
277 {
278 if (count($this->children)>0)
279 {
280 return $this->children[0];
281 }
282 return null;
283 }
284
285 // returns the last child of node
286 function last_child()
287 {
288 if (($count=count($this->children))>0)
289 {
290 return $this->children[$count-1];
291 }
292 return null;
293 }
294
295 // returns the next sibling of node
296 function next_sibling()
297 {
298 if ($this->parent===null)
299 {
300 return null;
301 }
302
303 $idx = 0;
304 $count = count($this->parent->children);
305 while ($idx<$count && $this!==$this->parent->children[$idx])
306 {
307 ++$idx;
308 }
309 if (++$idx>=$count)
310 {
311 return null;
312 }
313 return $this->parent->children[$idx];
314 }
315
316 // returns the previous sibling of node
317 function prev_sibling()
318 {
319 if ($this->parent===null) return null;
320 $idx = 0;
321 $count = count($this->parent->children);
322 while ($idx<$count && $this!==$this->parent->children[$idx])
323 ++$idx;
324 if (--$idx<0) return null;
325 return $this->parent->children[$idx];
326 }
327
328 // function to locate a specific ancestor tag in the path to the root.
329 function find_ancestor_tag($tag)
330 {
331 global $debugObject;
332 if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
333
334 // Start by including ourselves in the comparison.
335 $returnDom = $this;
336
337 while (!is_null($returnDom))
338 {
339 if (is_object($debugObject)) { $debugObject->debugLog(2, "Current tag is: " . $returnDom->tag); }
340
341 if ($returnDom->tag == $tag)
342 {
343 break;
344 }
345 $returnDom = $returnDom->parent;
346 }
347 return $returnDom;
348 }
349
350 // get dom node's inner html
351 function innertext()
352 {
353 if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
354 if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
355
356 $ret = '';
357 foreach ($this->nodes as $n)
358 $ret .= $n->outertext();
359 return $ret;
360 }
361
362 // get dom node's outer text (with tag)
363 function outertext()
364 {
365 global $debugObject;
366 if (is_object($debugObject))
367 {
368 $text = '';
369 if ($this->tag == 'text')
370 {
371 if (!empty($this->text))
372 {
373 $text = " with text: " . $this->text;
374 }
375 }
376 $debugObject->debugLog(1, 'Innertext of tag: ' . $this->tag . $text);
377 }
378
379 if ($this->tag==='root') return $this->innertext();
380
381 // trigger callback
382 if ($this->dom && $this->dom->callback!==null)
383 {
384 call_user_func_array($this->dom->callback, array($this));
385 }
386
387 if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
388 if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
389
390 // render begin tag
391 if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]])
392 {
393 $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
394 } else {
395 $ret = "";
396 }
397
398 // render inner text
399 if (isset($this->_[HDOM_INFO_INNER]))
400 {
401 // If it's a br tag... don't return the HDOM_INNER_INFO that we may or may not have added.
402 if ($this->tag != "br")
403 {
404 $ret .= $this->_[HDOM_INFO_INNER];
405 }
406 } else {
407 if ($this->nodes)
408 {
409 foreach ($this->nodes as $n)
410 {
411 $ret .= $this->convert_text($n->outertext());
412 }
413 }
414 }
415
416 // render end tag
417 if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
418 $ret .= '</'.$this->tag.'>';
419 return $ret;
420 }
421
422 // get dom node's plain text
423 function text()
424 {
425 if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
426 switch ($this->nodetype)
427 {
428 case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
429 case HDOM_TYPE_COMMENT: return '';
430 case HDOM_TYPE_UNKNOWN: return '';
431 }
432 if (strcasecmp($this->tag, 'script')===0) return '';
433 if (strcasecmp($this->tag, 'style')===0) return '';
434
435 $ret = '';
436 // In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed for some span tags, and some p tags) $this->nodes is set to NULL.
437 // NOTE: This indicates that there is a problem where it's set to NULL without a clear happening.
438 // WHY is this happening?
439 if (!is_null($this->nodes))
440 {
441 foreach ($this->nodes as $n)
442 {
443 $ret .= $this->convert_text($n->text());
444 }
445
446 // If this node is a span... add a space at the end of it so multiple spans don't run into each other. This is plaintext after all.
447 if ($this->tag == "span")
448 {
449 $ret .= $this->dom->default_span_text;
450 }
451
452
453 }
454 return $ret;
455 }
456
457 function xmltext()
458 {
459 $ret = $this->innertext();
460 $ret = str_ireplace('<![CDATA[', '', $ret);
461 $ret = str_replace(']]>', '', $ret);
462 return $ret;
463 }
464
465 // build node's text with tag
466 function makeup()
467 {
468 // text, comment, unknown
469 if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
470
471 $ret = '<'.$this->tag;
472 $i = -1;
473
474 foreach ($this->attr as $key=>$val)
475 {
476 ++$i;
477
478 // skip removed attribute
479 if ($val===null || $val===false)
480 continue;
481
482 $ret .= $this->_[HDOM_INFO_SPACE][$i][0];
483 //no value attr: nowrap, checked selected...
484 if ($val===true)
485 $ret .= $key;
486 else {
487 switch ($this->_[HDOM_INFO_QUOTE][$i])
488 {
489 case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
490 case HDOM_QUOTE_SINGLE: $quote = '\''; break;
491 default: $quote = '';
492 }
493 $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
494 }
495 }
496 $ret = $this->dom->restore_noise($ret);
497 return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
498 }
499
500 // find elements by css selector
501 //PaperG - added ability for find to lowercase the value of the selector.
502 function find($selector, $idx=null, $lowercase=false)
503 {
504 $selectors = $this->parse_selector($selector);
505 if (($count=count($selectors))===0) return array();
506 $found_keys = array();
507
508 // find each selector
509 for ($c=0; $c<$count; ++$c)
510 {
511 // The change on the below line was documented on the sourceforge code tracker id 2788009
512 // used to be: if (($levle=count($selectors[0]))===0) return array();
513 if (($levle=count($selectors[$c]))===0) return array();
514 if (!isset($this->_[HDOM_INFO_BEGIN])) return array();
515
516 $head = array($this->_[HDOM_INFO_BEGIN]=>1);
517
518 // handle descendant selectors, no recursive!
519 for ($l=0; $l<$levle; ++$l)
520 {
521 $ret = array();
522 foreach ($head as $k=>$v)
523 {
524 $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k];
525 //PaperG - Pass this optional parameter on to the seek function.
526 $n->seek($selectors[$c][$l], $ret, $lowercase);
527 }
528 $head = $ret;
529 }
530
531 foreach ($head as $k=>$v)
532 {
533 if (!isset($found_keys[$k]))
534 $found_keys[$k] = 1;
535 }
536 }
537
538 // sort keys
539 ksort($found_keys);
540
541 $found = array();
542 foreach ($found_keys as $k=>$v)
543 $found[] = $this->dom->nodes[$k];
544
545 // return nth-element or array
546 if (is_null($idx)) return $found;
547 else if ($idx<0) $idx = count($found) + $idx;
548 return (isset($found[$idx])) ? $found[$idx] : null;
549 }
550
551 // seek for given conditions
552 // PaperG - added parameter to allow for case insensitive testing of the value of a selector.
553 protected function seek($selector, &$ret, $lowercase=false)
554 {
555 global $debugObject;
556 if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
557
558 list($tag, $key, $val, $exp, $no_key) = $selector;
559
560 // xpath index
561 if ($tag && $key && is_numeric($key))
562 {
563 $count = 0;
564 foreach ($this->children as $c)
565 {
566 if ($tag==='*' || $tag===$c->tag) {
567 if (++$count==$key) {
568 $ret[$c->_[HDOM_INFO_BEGIN]] = 1;
569 return;
570 }
571 }
572 }
573 return;
574 }
575
576 $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0;
577 if ($end==0) {
578 $parent = $this->parent;
579 while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) {
580 $end -= 1;
581 $parent = $parent->parent;
582 }
583 $end += $parent->_[HDOM_INFO_END];
584 }
585
586 for ($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) {
587 $node = $this->dom->nodes[$i];
588
589 $pass = true;
590
591 if ($tag==='*' && !$key) {
592 if (in_array($node, $this->children, true))
593 $ret[$i] = 1;
594 continue;
595 }
596
597 // compare tag
598 if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;}
599 // compare key
600 if ($pass && $key) {
601 if ($no_key) {
602 if (isset($node->attr[$key])) $pass=false;
603 } else {
604 if (($key != "plaintext") && !isset($node->attr[$key])) $pass=false;
605 }
606 }
607 // compare value
608 if ($pass && $key && $val && $val!=='*') {
609 // If they have told us that this is a "plaintext" search then we want the plaintext of the node - right?
610 if ($key == "plaintext") {
611 // $node->plaintext actually returns $node->text();
612 $nodeKeyValue = $node->text();
613 } else {
614 // this is a normal search, we want the value of that attribute of the tag.
615 $nodeKeyValue = $node->attr[$key];
616 }
617 if (is_object($debugObject)) {$debugObject->debugLog(2, "testing node: " . $node->tag . " for attribute: " . $key . $exp . $val . " where nodes value is: " . $nodeKeyValue);}
618
619 //PaperG - If lowercase is set, do a case insensitive test of the value of the selector.
620 if ($lowercase) {
621 $check = $this->match($exp, strtolower($val), strtolower($nodeKeyValue));
622 } else {
623 $check = $this->match($exp, $val, $nodeKeyValue);
624 }
625 if (is_object($debugObject)) {$debugObject->debugLog(2, "after match: " . ($check ? "true" : "false"));}
626
627 // handle multiple class
628 if (!$check && strcasecmp($key, 'class')===0) {
629 foreach (explode(' ',$node->attr[$key]) as $k) {
630 // Without this, there were cases where leading, trailing, or double spaces lead to our comparing blanks - bad form.
631 if (!empty($k)) {
632 if ($lowercase) {
633 $check = $this->match($exp, strtolower($val), strtolower($k));
634 } else {
635 $check = $this->match($exp, $val, $k);
636 }
637 if ($check) break;
638 }
639 }
640 }
641 if (!$check) $pass = false;
642 }
643 if ($pass) $ret[$i] = 1;
644 unset($node);
645 }
646 // It's passed by reference so this is actually what this function returns.
647 if (is_object($debugObject)) {$debugObject->debugLog(1, "EXIT - ret: ", $ret);}
648 }
649
650 protected function match($exp, $pattern, $value) {
651 global $debugObject;
652 if (is_object($debugObject)) {$debugObject->debugLogEntry(1);}
653
654 switch ($exp) {
655 case '=':
656 return ($value===$pattern);
657 case '!=':
658 return ($value!==$pattern);
659 case '^=':
660 return preg_match("/^".preg_quote($pattern,'/')."/", $value);
661 case '$=':
662 return preg_match("/".preg_quote($pattern,'/')."$/", $value);
663 case '*=':
664 if ($pattern[0]=='/') {
665 return preg_match($pattern, $value);
666 }
667 return preg_match("/".$pattern."/i", $value);
668 }
669 return false;
670 }
671
672 protected function parse_selector($selector_string) {
673 global $debugObject;
674 if (is_object($debugObject)) {$debugObject->debugLogEntry(1);}
675
676 // pattern of CSS selectors, modified from mootools
677 // Paperg: Add the colon to the attrbute, so that it properly finds <tag attr:ibute="something" > like google does.
678 // Note: if you try to look at this attribute, yo MUST use getAttribute since $dom->x:y will fail the php syntax check.
679 // Notice the \[ starting the attbute? and the @? following? This implies that an attribute can begin with an @ sign that is not captured.
680 // This implies that an html attribute specifier may start with an @ sign that is NOT captured by the expression.
681 // farther study is required to determine of this should be documented or removed.
682 // $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
683 $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-:]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
684 preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);
685 if (is_object($debugObject)) {$debugObject->debugLog(2, "Matches Array: ", $matches);}
686
687 $selectors = array();
688 $result = array();
689 //print_r($matches);
690
691 foreach ($matches as $m) {
692 $m[0] = trim($m[0]);
693 if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
694 // for browser generated xpath
695 if ($m[1]==='tbody') continue;
696
697 list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
698 if (!empty($m[2])) {$key='id'; $val=$m[2];}
699 if (!empty($m[3])) {$key='class'; $val=$m[3];}
700 if (!empty($m[4])) {$key=$m[4];}
701 if (!empty($m[5])) {$exp=$m[5];}
702 if (!empty($m[6])) {$val=$m[6];}
703
704 // convert to lowercase
705 if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
706 //elements that do NOT have the specified attribute
707 if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
708
709 $result[] = array($tag, $key, $val, $exp, $no_key);
710 if (trim($m[7])===',') {
711 $selectors[] = $result;
712 $result = array();
713 }
714 }
715 if (count($result)>0)
716 $selectors[] = $result;
717 return $selectors;
718 }
719
720 function __get($name) {
721 if (isset($this->attr[$name]))
722 {
723 return $this->convert_text($this->attr[$name]);
724 }
725 switch ($name) {
726 case 'outertext': return $this->outertext();
727 case 'innertext': return $this->innertext();
728 case 'plaintext': return $this->text();
729 case 'xmltext': return $this->xmltext();
730 default: return array_key_exists($name, $this->attr);
731 }
732 }
733
734 function __set($name, $value) {
735 switch ($name) {
736 case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
737 case 'innertext':
738 if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value;
739 return $this->_[HDOM_INFO_INNER] = $value;
740 }
741 if (!isset($this->attr[$name])) {
742 $this->_[HDOM_INFO_SPACE][] = array(' ', '', '');
743 $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
744 }
745 $this->attr[$name] = $value;
746 }
747
748 function __isset($name) {
749 switch ($name) {
750 case 'outertext': return true;
751 case 'innertext': return true;
752 case 'plaintext': return true;
753 }
754 //no value attr: nowrap, checked selected...
755 return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
756 }
757
758 function __unset($name) {
759 if (isset($this->attr[$name]))
760 unset($this->attr[$name]);
761 }
762
763 // PaperG - Function to convert the text from one character set to another if the two sets are not the same.
764 function convert_text($text)
765 {
766 global $debugObject;
767 if (is_object($debugObject)) {$debugObject->debugLogEntry(1);}
768
769 $converted_text = $text;
770
771 $sourceCharset = "";
772 $targetCharset = "";
773
774 if ($this->dom)
775 {
776 $sourceCharset = strtoupper($this->dom->_charset);
777 $targetCharset = strtoupper($this->dom->_target_charset);
778 }
779 if (is_object($debugObject)) {$debugObject->debugLog(3, "source charset: " . $sourceCharset . " target charaset: " . $targetCharset);}
780
781 if (!empty($sourceCharset) && !empty($targetCharset) && (strcasecmp($sourceCharset, $targetCharset) != 0))
782 {
783 // Check if the reported encoding could have been incorrect and the text is actually already UTF-8
784 if ((strcasecmp($targetCharset, 'UTF-8') == 0) && ($this->is_utf8($text)))
785 {
786 $converted_text = $text;
787 }
788 else
789 {
790 $converted_text = iconv($sourceCharset, $targetCharset, $text);
791 }
792 }
793
794 // Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output.
795 if ($targetCharset == 'UTF-8')
796 {
797 if (substr($converted_text, 0, 3) == "\xef\xbb\xbf")
798 {
799 $converted_text = substr($converted_text, 3);
800 }
801 if (substr($converted_text, -3) == "\xef\xbb\xbf")
802 {
803 $converted_text = substr($converted_text, 0, -3);
804 }
805 }
806
807 return $converted_text;
808 }
809
810 /**
811 * Returns true if $string is valid UTF-8 and false otherwise.
812 *
813 * @param mixed $str String to be tested
814 * @return boolean
815 */
816 static function is_utf8($str)
817 {
818 $c=0; $b=0;
819 $bits=0;
820 $len=strlen($str);
821 for($i=0; $i<$len; $i++)
822 {
823 $c=ord($str[$i]);
824 if($c > 128)
825 {
826 if(($c >= 254)) return false;
827 elseif($c >= 252) $bits=6;
828 elseif($c >= 248) $bits=5;
829 elseif($c >= 240) $bits=4;
830 elseif($c >= 224) $bits=3;
831 elseif($c >= 192) $bits=2;
832 else return false;
833 if(($i+$bits) > $len) return false;
834 while($bits > 1)
835 {
836 $i++;
837 $b=ord($str[$i]);
838 if($b < 128 || $b > 191) return false;
839 $bits--;
840 }
841 }
842 }
843 return true;
844 }
845 /*
846 function is_utf8($string)
847 {
848 //this is buggy
849 return (utf8_encode(utf8_decode($string)) == $string);
850 }
851 */
852
853 /**
854 * Function to try a few tricks to determine the displayed size of an img on the page.
855 * NOTE: This will ONLY work on an IMG tag. Returns FALSE on all other tag types.
856 *
857 * @author John Schlick
858 * @version April 19 2012
859 * @return array an array containing the 'height' and 'width' of the image on the page or -1 if we can't figure it out.
860 */
861 function get_display_size()
862 {
863 global $debugObject;
864
865 $width = -1;
866 $height = -1;
867
868 if ($this->tag !== 'img')
869 {
870 return false;
871 }
872
873 // See if there is aheight or width attribute in the tag itself.
874 if (isset($this->attr['width']))
875 {
876 $width = $this->attr['width'];
877 }
878
879 if (isset($this->attr['height']))
880 {
881 $height = $this->attr['height'];
882 }
883
884 // Now look for an inline style.
885 if (isset($this->attr['style']))
886 {
887 // Thanks to user gnarf from stackoverflow for this regular expression.
888 $attributes = array();
889 preg_match_all("/([\w-]+)\s*:\s*([^;]+)\s*;?/", $this->attr['style'], $matches, PREG_SET_ORDER);
890 foreach ($matches as $match) {
891 $attributes[$match[1]] = $match[2];
892 }
893
894 // If there is a width in the style attributes:
895 if (isset($attributes['width']) && $width == -1)
896 {
897 // check that the last two characters are px (pixels)
898 if (strtolower(substr($attributes['width'], -2)) == 'px')
899 {
900 $proposed_width = substr($attributes['width'], 0, -2);
901 // Now make sure that it's an integer and not something stupid.
902 if (filter_var($proposed_width, FILTER_VALIDATE_INT))
903 {
904 $width = $proposed_width;
905 }
906 }
907 }
908
909 // If there is a width in the style attributes:
910 if (isset($attributes['height']) && $height == -1)
911 {
912 // check that the last two characters are px (pixels)
913 if (strtolower(substr($attributes['height'], -2)) == 'px')
914 {
915 $proposed_height = substr($attributes['height'], 0, -2);
916 // Now make sure that it's an integer and not something stupid.
917 if (filter_var($proposed_height, FILTER_VALIDATE_INT))
918 {
919 $height = $proposed_height;
920 }
921 }
922 }
923
924 }
925
926 // Future enhancement:
927 // Look in the tag to see if there is a class or id specified that has a height or width attribute to it.
928
929 // Far future enhancement
930 // Look at all the parent tags of this image to see if they specify a class or id that has an img selector that specifies a height or width
931 // Note that in this case, the class or id will have the img subselector for it to apply to the image.
932
933 // ridiculously far future development
934 // If the class or id is specified in a SEPARATE css file thats not on the page, go get it and do what we were just doing for the ones on the page.
935
936 $result = array('height' => $height,
937 'width' => $width);
938 return $result;
939 }
940
941 // camel naming conventions
942 function getAllAttributes() {return $this->attr;}
943 function getAttribute($name) {return $this->__get($name);}
944 function setAttribute($name, $value) {$this->__set($name, $value);}
945 function hasAttribute($name) {return $this->__isset($name);}
946 function removeAttribute($name) {$this->__set($name, null);}
947 function getElementById($id) {return $this->find("#$id", 0);}
948 function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
949 function getElementByTagName($name) {return $this->find($name, 0);}
950 function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);}
951 function parentNode() {return $this->parent();}
952 function childNodes($idx=-1) {return $this->children($idx);}
953 function firstChild() {return $this->first_child();}
954 function lastChild() {return $this->last_child();}
955 function nextSibling() {return $this->next_sibling();}
956 function previousSibling() {return $this->prev_sibling();}
957 function hasChildNodes() {return $this->has_child();}
958 function nodeName() {return $this->tag;}
959 function appendChild($node) {$node->parent($this); return $node;}
960
961 }
962
963 /**
964 * simple html dom parser
965 * Paperg - in the find routine: allow us to specify that we want case insensitive testing of the value of the selector.
966 * Paperg - change $size from protected to public so we can easily access it
967 * Paperg - added ForceTagsClosed in the constructor which tells us whether we trust the html or not. Default is to NOT trust it.
968 *
969 * @package PlaceLocalInclude
970 */
971 class simple_html_dom
972 {
973 public $root = null;
974 public $nodes = array();
975 public $callback = null;
976 public $lowercase = false;
977 // Used to keep track of how large the text was when we started.
978 public $original_size;
979 public $size;
980 protected $pos;
981 protected $doc;
982 protected $char;
983 protected $cursor;
984 protected $parent;
985 protected $noise = array();
986 protected $token_blank = " \t\r\n";
987 protected $token_equal = ' =/>';
988 protected $token_slash = " />\r\n\t";
989 protected $token_attr = ' >';
990 // Note that this is referenced by a child node, and so it needs to be public for that node to see this information.
991 public $_charset = '';
992 public $_target_charset = '';
993 protected $default_br_text = "";
994 public $default_span_text = "";
995
996 // use isset instead of in_array, performance boost about 30%...
997 protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1);
998 protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, 'span'=>1, 'table'=>1);
999 // Known sourceforge issue #2977341
1000 // B tags that are not closed cause us to return everything to the end of the document.
1001 protected $optional_closing_tags = array(
1002 'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1),
1003 'th'=>array('th'=>1),
1004 'td'=>array('td'=>1),
1005 'li'=>array('li'=>1),
1006 'dt'=>array('dt'=>1, 'dd'=>1),
1007 'dd'=>array('dd'=>1, 'dt'=>1),
1008 'dl'=>array('dd'=>1, 'dt'=>1),
1009 'p'=>array('p'=>1),
1010 'nobr'=>array('nobr'=>1),
1011 'b'=>array('b'=>1),
1012 'option'=>array('option'=>1),
1013 );
1014
1015 function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
1016 {
1017 if ($str)
1018 {
1019 if (preg_match("/^http:\/\//i",$str) || is_file($str))
1020 {
1021 $this->load_file($str);
1022 }
1023 else
1024 {
1025 $this->load($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
1026 }
1027 }
1028 // Forcing tags to be closed implies that we don't trust the html, but it can lead to parsing errors if we SHOULD trust the html.
1029 if (!$forceTagsClosed) {
1030 $this->optional_closing_array=array();
1031 }
1032 $this->_target_charset = $target_charset;
1033 }
1034
1035 function __destruct()
1036 {
1037 $this->clear();
1038 }
1039
1040 // load html from string
1041 function load($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
1042 {
1043 global $debugObject;
1044
1045 // prepare
1046 $this->prepare($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
1047 // strip out comments
1048 $this->remove_noise("'<!--(.*?)-->'is");
1049 // strip out cdata
1050 $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
1051 // Per sourceforge
1052 // Script tags removal now preceeds style tag removal.
1053 // strip out <script> tags
1054 $this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is");
1055 $this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
1056 // strip out <style> tags
1057 $this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is");
1058 $this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is");
1059 // strip out preformatted tags
1060 $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
1061 // strip out server side scripts
1062 $this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
1063 // strip smarty scripts
1064 $this->remove_noise("'(\{\w)(.*?)(\})'s", true);
1065
1066 // parsing
1067 while ($this->parse());
1068 // end
1069 $this->root->_[HDOM_INFO_END] = $this->cursor;
1070 $this->parse_charset();
1071
1072 // make load function chainable
1073 return $this;
1074
1075 }
1076
1077 // load html from file
1078 function load_file()
1079 {
1080 $args = func_get_args();
1081 $this->load(call_user_func_array('file_get_contents', $args), true);
1082 // Throw an error if we can't properly load the dom.
1083 if (($error=error_get_last())!==null) {
1084 $this->clear();
1085 return false;
1086 }
1087 }
1088
1089 // set callback function
1090 function set_callback($function_name)
1091 {
1092 $this->callback = $function_name;
1093 }
1094
1095 // remove callback function
1096 function remove_callback()
1097 {
1098 $this->callback = null;
1099 }
1100
1101 // save dom as string
1102 function save($filepath='')
1103 {
1104 $ret = $this->root->innertext();
1105 if ($filepath!=='') file_put_contents($filepath, $ret, LOCK_EX);
1106 return $ret;
1107 }
1108
1109 // find dom node by css selector
1110 // Paperg - allow us to specify that we want case insensitive testing of the value of the selector.
1111 function find($selector, $idx=null, $lowercase=false)
1112 {
1113 return $this->root->find($selector, $idx, $lowercase);
1114 }
1115
1116 // clean up memory due to php5 circular references memory leak...
1117 function clear()
1118 {
1119 foreach ($this->nodes as $n) {$n->clear(); $n = null;}
1120 // This add next line is documented in the sourceforge repository. 2977248 as a fix for ongoing memory leaks that occur even with the use of clear.
1121 if (isset($this->children)) foreach ($this->children as $n) {$n->clear(); $n = null;}
1122 if (isset($this->parent)) {$this->parent->clear(); unset($this->parent);}
1123 if (isset($this->root)) {$this->root->clear(); unset($this->root);}
1124 unset($this->doc);
1125 unset($this->noise);
1126 }
1127
1128 function dump($show_attr=true)
1129 {
1130 $this->root->dump($show_attr);
1131 }
1132
1133 // prepare HTML data and init everything
1134 protected function prepare($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
1135 {
1136 $this->clear();
1137
1138 // set the length of content before we do anything to it.
1139 $this->size = strlen($str);
1140 // Save the original size of the html that we got in. It might be useful to someone.
1141 $this->original_size = $this->size;
1142
1143 //before we save the string as the doc... strip out the \r \n's if we are told to.
1144 if ($stripRN) {
1145 $str = str_replace("\r", " ", $str);
1146 $str = str_replace("\n", " ", $str);
1147
1148 // set the length of content since we have changed it.
1149 $this->size = strlen($str);
1150 }
1151
1152 $this->doc = $str;
1153 $this->pos = 0;
1154 $this->cursor = 1;
1155 $this->noise = array();
1156 $this->nodes = array();
1157 $this->lowercase = $lowercase;
1158 $this->default_br_text = $defaultBRText;
1159 $this->default_span_text = $defaultSpanText;
1160 $this->root = new simple_html_dom_node($this);
1161 $this->root->tag = 'root';
1162 $this->root->_[HDOM_INFO_BEGIN] = -1;
1163 $this->root->nodetype = HDOM_TYPE_ROOT;
1164 $this->parent = $this->root;
1165 if ($this->size>0) $this->char = $this->doc[0];
1166 }
1167
1168 // parse html content
1169 protected function parse()
1170 {
1171 if (($s = $this->copy_until_char('<'))==='')
1172 {
1173 return $this->read_tag();
1174 }
1175
1176 // text
1177 $node = new simple_html_dom_node($this);
1178 ++$this->cursor;
1179 $node->_[HDOM_INFO_TEXT] = $s;
1180 $this->link_nodes($node, false);
1181 return true;
1182 }
1183
1184 // PAPERG - dkchou - added this to try to identify the character set of the page we have just parsed so we know better how to spit it out later.
1185 // NOTE: IF you provide a routine called get_last_retrieve_url_contents_content_type which returns the CURLINFO_CONTENT_TYPE from the last curl_exec
1186 // (or the content_type header from the last transfer), we will parse THAT, and if a charset is specified, we will use it over any other mechanism.
1187 protected function parse_charset()
1188 {
1189 global $debugObject;
1190
1191 $charset = null;
1192
1193 if (function_exists('get_last_retrieve_url_contents_content_type'))
1194 {
1195 $contentTypeHeader = get_last_retrieve_url_contents_content_type();
1196 $success = preg_match('/charset=(.+)/', $contentTypeHeader, $matches);
1197 if ($success)
1198 {
1199 $charset = $matches[1];
1200 if (is_object($debugObject)) {$debugObject->debugLog(2, 'header content-type found charset of: ' . $charset);}
1201 }
1202
1203 }
1204
1205 if (empty($charset))
1206 {
1207 $el = $this->root->find('meta[http-equiv=Content-Type]',0);
1208 if (!empty($el))
1209 {
1210 $fullvalue = $el->content;
1211 if (is_object($debugObject)) {$debugObject->debugLog(2, 'meta content-type tag found' . $fullvalue);}
1212
1213 if (!empty($fullvalue))
1214 {
1215 $success = preg_match('/charset=(.+)/', $fullvalue, $matches);
1216 if ($success)
1217 {
1218 $charset = $matches[1];
1219 }
1220 else
1221 {
1222 // If there is a meta tag, and they don't specify the character set, research says that it's typically ISO-8859-1
1223 if (is_object($debugObject)) {$debugObject->debugLog(2, 'meta content-type tag couldn\'t be parsed. using iso-8859 default.');}
1224 $charset = 'ISO-8859-1';
1225 }
1226 }
1227 }
1228 }
1229
1230 // If we couldn't find a charset above, then lets try to detect one based on the text we got...
1231 if (empty($charset))
1232 {
1233 // Have php try to detect the encoding from the text given to us.
1234 $charset = mb_detect_encoding($this->root->plaintext . "ascii", $encoding_list = array( "UTF-8", "CP1252" ) );
1235 if (is_object($debugObject)) {$debugObject->debugLog(2, 'mb_detect found: ' . $charset);}
1236
1237 // and if this doesn't work... then we need to just wrongheadedly assume it's UTF-8 so that we can move on - cause this will usually give us most of what we need...
1238 if ($charset === false)
1239 {
1240 if (is_object($debugObject)) {$debugObject->debugLog(2, 'since mb_detect failed - using default of utf-8');}
1241 $charset = 'UTF-8';
1242 }
1243 }
1244
1245 // Since CP1252 is a superset, if we get one of it's subsets, we want it instead.
1246 if ((strtolower($charset) == strtolower('ISO-8859-1')) || (strtolower($charset) == strtolower('Latin1')) || (strtolower($charset) == strtolower('Latin-1')))
1247 {
1248 if (is_object($debugObject)) {$debugObject->debugLog(2, 'replacing ' . $charset . ' with CP1252 as its a superset');}
1249 $charset = 'CP1252';
1250 }
1251
1252 if (is_object($debugObject)) {$debugObject->debugLog(1, 'EXIT - ' . $charset);}
1253
1254 return $this->_charset = $charset;
1255 }
1256
1257 // read tag info
1258 protected function read_tag()
1259 {
1260 if ($this->char!=='<')
1261 {
1262 $this->root->_[HDOM_INFO_END] = $this->cursor;
1263 return false;
1264 }
1265 $begin_tag_pos = $this->pos;
1266 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1267
1268 // end tag
1269 if ($this->char==='/')
1270 {
1271 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1272 // This represents the change in the simple_html_dom trunk from revision 180 to 181.
1273 // $this->skip($this->token_blank_t);
1274 $this->skip($this->token_blank);
1275 $tag = $this->copy_until_char('>');
1276
1277 // skip attributes in end tag
1278 if (($pos = strpos($tag, ' '))!==false)
1279 $tag = substr($tag, 0, $pos);
1280
1281 $parent_lower = strtolower($this->parent->tag);
1282 $tag_lower = strtolower($tag);
1283
1284 if ($parent_lower!==$tag_lower)
1285 {
1286 if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower]))
1287 {
1288 $this->parent->_[HDOM_INFO_END] = 0;
1289 $org_parent = $this->parent;
1290
1291 while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
1292 $this->parent = $this->parent->parent;
1293
1294 if (strtolower($this->parent->tag)!==$tag_lower) {
1295 $this->parent = $org_parent; // restore origonal parent
1296 if ($this->parent->parent) $this->parent = $this->parent->parent;
1297 $this->parent->_[HDOM_INFO_END] = $this->cursor;
1298 return $this->as_text_node($tag);
1299 }
1300 }
1301 else if (($this->parent->parent) && isset($this->block_tags[$tag_lower]))
1302 {
1303 $this->parent->_[HDOM_INFO_END] = 0;
1304 $org_parent = $this->parent;
1305
1306 while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
1307 $this->parent = $this->parent->parent;
1308
1309 if (strtolower($this->parent->tag)!==$tag_lower)
1310 {
1311 $this->parent = $org_parent; // restore origonal parent
1312 $this->parent->_[HDOM_INFO_END] = $this->cursor;
1313 return $this->as_text_node($tag);
1314 }
1315 }
1316 else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower)
1317 {
1318 $this->parent->_[HDOM_INFO_END] = 0;
1319 $this->parent = $this->parent->parent;
1320 }
1321 else
1322 return $this->as_text_node($tag);
1323 }
1324
1325 $this->parent->_[HDOM_INFO_END] = $this->cursor;
1326 if ($this->parent->parent) $this->parent = $this->parent->parent;
1327
1328 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1329 return true;
1330 }
1331
1332 $node = new simple_html_dom_node($this);
1333 $node->_[HDOM_INFO_BEGIN] = $this->cursor;
1334 ++$this->cursor;
1335 $tag = $this->copy_until($this->token_slash);
1336 $node->tag_start = $begin_tag_pos;
1337
1338 // doctype, cdata & comments...
1339 if (isset($tag[0]) && $tag[0]==='!') {
1340 $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
1341
1342 if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
1343 $node->nodetype = HDOM_TYPE_COMMENT;
1344 $node->tag = 'comment';
1345 } else {
1346 $node->nodetype = HDOM_TYPE_UNKNOWN;
1347 $node->tag = 'unknown';
1348 }
1349 if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
1350 $this->link_nodes($node, true);
1351 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1352 return true;
1353 }
1354
1355 // text
1356 if ($pos=strpos($tag, '<')!==false) {
1357 $tag = '<' . substr($tag, 0, -1);
1358 $node->_[HDOM_INFO_TEXT] = $tag;
1359 $this->link_nodes($node, false);
1360 $this->char = $this->doc[--$this->pos]; // prev
1361 return true;
1362 }
1363
1364 if (!preg_match("/^[\w-:]+$/", $tag)) {
1365 $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
1366 if ($this->char==='<') {
1367 $this->link_nodes($node, false);
1368 return true;
1369 }
1370
1371 if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
1372 $this->link_nodes($node, false);
1373 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1374 return true;
1375 }
1376
1377 // begin tag
1378 $node->nodetype = HDOM_TYPE_ELEMENT;
1379 $tag_lower = strtolower($tag);
1380 $node->tag = ($this->lowercase) ? $tag_lower : $tag;
1381
1382 // handle optional closing tags
1383 if (isset($this->optional_closing_tags[$tag_lower]) )
1384 {
1385 while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)]))
1386 {
1387 $this->parent->_[HDOM_INFO_END] = 0;
1388 $this->parent = $this->parent->parent;
1389 }
1390 $node->parent = $this->parent;
1391 }
1392
1393 $guard = 0; // prevent infinity loop
1394 $space = array($this->copy_skip($this->token_blank), '', '');
1395
1396 // attributes
1397 do
1398 {
1399 if ($this->char!==null && $space[0]==='')
1400 {
1401 break;
1402 }
1403 $name = $this->copy_until($this->token_equal);
1404 if ($guard===$this->pos)
1405 {
1406 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1407 continue;
1408 }
1409 $guard = $this->pos;
1410
1411 // handle endless '<'
1412 if ($this->pos>=$this->size-1 && $this->char!=='>') {
1413 $node->nodetype = HDOM_TYPE_TEXT;
1414 $node->_[HDOM_INFO_END] = 0;
1415 $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name;
1416 $node->tag = 'text';
1417 $this->link_nodes($node, false);
1418 return true;
1419 }
1420
1421 // handle mismatch '<'
1422 if ($this->doc[$this->pos-1]=='<') {
1423 $node->nodetype = HDOM_TYPE_TEXT;
1424 $node->tag = 'text';
1425 $node->attr = array();
1426 $node->_[HDOM_INFO_END] = 0;
1427 $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1);
1428 $this->pos -= 2;
1429 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1430 $this->link_nodes($node, false);
1431 return true;
1432 }
1433
1434 if ($name!=='/' && $name!=='') {
1435 $space[1] = $this->copy_skip($this->token_blank);
1436 $name = $this->restore_noise($name);
1437 if ($this->lowercase) $name = strtolower($name);
1438 if ($this->char==='=') {
1439 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1440 $this->parse_attr($node, $name, $space);
1441 }
1442 else {
1443 //no value attr: nowrap, checked selected...
1444 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
1445 $node->attr[$name] = true;
1446 if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
1447 }
1448 $node->_[HDOM_INFO_SPACE][] = $space;
1449 $space = array($this->copy_skip($this->token_blank), '', '');
1450 }
1451 else
1452 break;
1453 } while ($this->char!=='>' && $this->char!=='/');
1454
1455 $this->link_nodes($node, true);
1456 $node->_[HDOM_INFO_ENDSPACE] = $space[0];
1457
1458 // check self closing
1459 if ($this->copy_until_char_escape('>')==='/')
1460 {
1461 $node->_[HDOM_INFO_ENDSPACE] .= '/';
1462 $node->_[HDOM_INFO_END] = 0;
1463 }
1464 else
1465 {
1466 // reset parent
1467 if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node;
1468 }
1469 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1470
1471 // If it's a BR tag, we need to set it's text to the default text.
1472 // This way when we see it in plaintext, we can generate formatting that the user wants.
1473 // since a br tag never has sub nodes, this works well.
1474 if ($node->tag == "br")
1475 {
1476 $node->_[HDOM_INFO_INNER] = $this->default_br_text;
1477 }
1478
1479 return true;
1480 }
1481
1482 // parse attributes
1483 protected function parse_attr($node, $name, &$space)
1484 {
1485 // Per sourceforge:
1486 // If the attribute is already defined inside a tag, only pay atetntion to the first one as opposed to the last one.
1487 if (isset($node->attr[$name]))
1488 {
1489 return;
1490 }
1491
1492 $space[2] = $this->copy_skip($this->token_blank);
1493 switch ($this->char) {
1494 case '"':
1495 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
1496 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1497 $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"'));
1498 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1499 break;
1500 case '\'':
1501 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
1502 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1503 $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\''));
1504 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1505 break;
1506 default:
1507 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
1508 $node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
1509 }
1510 // PaperG: Attributes should not have \r or \n in them, that counts as html whitespace.
1511 $node->attr[$name] = str_replace("\r", "", $node->attr[$name]);
1512 $node->attr[$name] = str_replace("\n", "", $node->attr[$name]);
1513 // PaperG: If this is a "class" selector, lets get rid of the preceeding and trailing space since some people leave it in the multi class case.
1514 if ($name == "class") {
1515 $node->attr[$name] = trim($node->attr[$name]);
1516 }
1517 }
1518
1519 // link node's parent
1520 protected function link_nodes(&$node, $is_child)
1521 {
1522 $node->parent = $this->parent;
1523 $this->parent->nodes[] = $node;
1524 if ($is_child)
1525 {
1526 $this->parent->children[] = $node;
1527 }
1528 }
1529
1530 // as a text node
1531 protected function as_text_node($tag)
1532 {
1533 $node = new simple_html_dom_node($this);
1534 ++$this->cursor;
1535 $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
1536 $this->link_nodes($node, false);
1537 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1538 return true;
1539 }
1540
1541 protected function skip($chars)
1542 {
1543 $this->pos += strspn($this->doc, $chars, $this->pos);
1544 $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1545 }
1546
1547 protected function copy_skip($chars)
1548 {
1549 $pos = $this->pos;
1550 $len = strspn($this->doc, $chars, $pos);
1551 $this->pos += $len;
1552 $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1553 if ($len===0) return '';
1554 return substr($this->doc, $pos, $len);
1555 }
1556
1557 protected function copy_until($chars)
1558 {
1559 $pos = $this->pos;
1560 $len = strcspn($this->doc, $chars, $pos);
1561 $this->pos += $len;
1562 $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1563 return substr($this->doc, $pos, $len);
1564 }
1565
1566 protected function copy_until_char($char)
1567 {
1568 if ($this->char===null) return '';
1569
1570 if (($pos = strpos($this->doc, $char, $this->pos))===false) {
1571 $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
1572 $this->char = null;
1573 $this->pos = $this->size;
1574 return $ret;
1575 }
1576
1577 if ($pos===$this->pos) return '';
1578 $pos_old = $this->pos;
1579 $this->char = $this->doc[$pos];
1580 $this->pos = $pos;
1581 return substr($this->doc, $pos_old, $pos-$pos_old);
1582 }
1583
1584 protected function copy_until_char_escape($char)
1585 {
1586 if ($this->char===null) return '';
1587
1588 $start = $this->pos;
1589 while (1)
1590 {
1591 if (($pos = strpos($this->doc, $char, $start))===false)
1592 {
1593 $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
1594 $this->char = null;
1595 $this->pos = $this->size;
1596 return $ret;
1597 }
1598
1599 if ($pos===$this->pos) return '';
1600
1601 if ($this->doc[$pos-1]==='\\') {
1602 $start = $pos+1;
1603 continue;
1604 }
1605
1606 $pos_old = $this->pos;
1607 $this->char = $this->doc[$pos];
1608 $this->pos = $pos;
1609 return substr($this->doc, $pos_old, $pos-$pos_old);
1610 }
1611 }
1612
1613 // remove noise from html content
1614 // save the noise in the $this->noise array.
1615 protected function remove_noise($pattern, $remove_tag=false)
1616 {
1617 global $debugObject;
1618 if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
1619
1620 $count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
1621
1622 for ($i=$count-1; $i>-1; --$i)
1623 {
1624 $key = '___noise___'.sprintf('% 5d', count($this->noise)+1000);
1625 if (is_object($debugObject)) { $debugObject->debugLog(2, 'key is: ' . $key); }
1626 $idx = ($remove_tag) ? 0 : 1;
1627 $this->noise[$key] = $matches[$i][$idx][0];
1628 $this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0]));
1629 }
1630
1631 // reset the length of content
1632 $this->size = strlen($this->doc);
1633 if ($this->size>0)
1634 {
1635 $this->char = $this->doc[0];
1636 }
1637 }
1638
1639 // restore noise to html content
1640 function restore_noise($text)
1641 {
1642 global $debugObject;
1643 if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
1644
1645 while (($pos=strpos($text, '___noise___'))!==false)
1646 {
1647 // Sometimes there is a broken piece of markup, and we don't GET the pos+11 etc... token which indicates a problem outside of us...
1648 if (strlen($text) > $pos+15)
1649 {
1650 $key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13].$text[$pos+14].$text[$pos+15];
1651 if (is_object($debugObject)) { $debugObject->debugLog(2, 'located key of: ' . $key); }
1652
1653 if (isset($this->noise[$key]))
1654 {
1655 $text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+16);
1656 }
1657 else
1658 {
1659 // do this to prevent an infinite loop.
1660 $text = substr($text, 0, $pos).'UNDEFINED NOISE FOR KEY: '.$key . substr($text, $pos+16);
1661 }
1662 }
1663 else
1664 {
1665 // There is no valid key being given back to us... We must get rid of the ___noise___ or we will have a problem.
1666 $text = substr($text, 0, $pos).'NO NUMERIC NOISE KEY' . substr($text, $pos+11);
1667 }
1668 }
1669 return $text;
1670 }
1671
1672 // Sometimes we NEED one of the noise elements.
1673 function search_noise($text)
1674 {
1675 global $debugObject;
1676 if (is_object($debugObject)) { $debugObject->debugLogEntry(1); }
1677
1678 foreach($this->noise as $noiseElement)
1679 {
1680 if (strpos($noiseElement, $text)!==false)
1681 {
1682 return $noiseElement;
1683 }
1684 }
1685 }
1686 function __toString()
1687 {
1688 return $this->root->innertext();
1689 }
1690
1691 function __get($name)
1692 {
1693 switch ($name)
1694 {
1695 case 'outertext':
1696 return $this->root->innertext();
1697 case 'innertext':
1698 return $this->root->innertext();
1699 case 'plaintext':
1700 return $this->root->text();
1701 case 'charset':
1702 return $this->_charset;
1703 case 'target_charset':
1704 return $this->_target_charset;
1705 }
1706 }
1707
1708 // camel naming conventions
1709 function childNodes($idx=-1) {return $this->root->childNodes($idx);}
1710 function firstChild() {return $this->root->first_child();}
1711 function lastChild() {return $this->root->last_child();}
1712 function createElement($name, $value=null) {return @str_get_html("<$name>$value</$name>")->first_child();}
1713 function createTextNode($value) {return @end(str_get_html($value)->nodes);}
1714 function getElementById($id) {return $this->find("#$id", 0);}
1715 function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
1716 function getElementByTagName($name) {return $this->find($name, 0);}
1717 function getElementsByTagName($name, $idx=-1) {return $this->find($name, $idx);}
1718 function loadFile() {$args = func_get_args();$this->load_file($args);}
1719 }
1720
1721 ?>
3：创建抓包代码 test.php,代码如下：
1 <?php
2 //error_reporting(0);
3 set_time_limit(0);
4 include_once 'simple_html_dom.php';
5 echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
6 //$data = '#在抖音，记录美好生活#【库存】抛个硬币 如果摔碎了 今天我就不吃饭了 #校园生活 #大学 复制此链接，打开【抖音短视频】，直接观看视频！';
7 $data = '#科比 愿你去的地方也有篮球陪伴，也能披着24号紫金战衣！ #动态壁纸 复制此链接，打开【抖音短视频】，直接观看视频！';
8 $data = getData($data);
9 echo json_encode($data);
10
11 function getData($data){
12 $url = getUrl($data);
13 $cookie_jar = dirname(__FILE__).'/tmp.txt';//tempnam('./tmp','cookie');
14 $data = get_content($url, $cookie_jar);
15
16 $page = str_get_html($data);
17
18 $data = array(
19 'base'=>array(
20 'headimg'=>false, // 头像
21 'name'=>false, // 昵称
22 'title'=>false, // 标题（姑且叫标题吧）
23 'description'=>false // 描述
24 ),
25 'video'=>array(
26 'cover'=>false, // 封面
27 'src'=>false, // 路径
28 'width'=>false, // 宽度
29 'height'=>false // 高度
30 )
31 );
32 $user = $page->find('div[class=user-info]');
33 // 头像、 昵称
34 if(count($user) > 0){
35 $img = $user[0]->find('div[class=avatar]');
36 if(count($img) > 0){
37 $img = $img[0]->find('img');
38 if(count($img) > 0){
39 // 头像
40 $data['base']['headimg'] = $img[0]->src;
41 // 昵称
42 $data['base']['name'] = $img[0]->alt;
43 }
44 }
45 }
46 // 标题、描述
47 $title = $page->find('div[class=challenge-info]');
48 if(count($title) > 0){
49 $description = $title[0]->next_sibling();
50 $title = $title[0]->first_child()->first_child();
51 $data['base']['title'] = $title->innertext;
52 $data['base']['description'] = $description->innertext;
53 }
54 $video = $page->find('div[id=pageletReflowVideo]');
55 if(count($video) > 0){
56 $script = $video[0]->next_sibling();
57 if(!empty($script)){
58 $script = $script->next_sibling();
59 if(!empty($script)){
60 $script = $script->next_sibling()->innertext;
61 $data['video'] = getVideo($script);
62 }
63 }
64
65
66 }
67 return $data;
68 }
69
70 function getVideo($scripts){
71 $video = array();
72 $scripts = preg_replace('/\s+/','',$scripts);
73 // 宽度
74 preg_match('/videoWidth:([0-9.]*),/' , $scripts, $matches);
75 if(empty($matches) || count($matches) < 2){
76 $video['width'] = false;
77 }else{
78 $video['width'] = $matches[1];
79 }
80 // 高度
81 preg_match('/videoHeight:([0-9.]*),/' , $scripts, $matches);
82 if(empty($matches) || count($matches) < 2){
83 $video['height'] = false;
84 }else{
85 $video['height'] = $matches[1];
86 }
87 // 视频路径
88 preg_match('/playAddr:"(.*)",/' , $scripts, $matches);
89 if(empty($matches) || count($matches) < 2){
90 $video['src'] = false;
91 }else{
92 $video['src'] = $matches[1];
93 }
94 // 封面
95 preg_match('/cover:"(.*)"}/' , $scripts, $matches);
96 if(empty($matches) || count($matches) < 2){
97 $video['cover'] = false;
98 }else{
99 $video['cover'] = $matches[1];
100 }
101 return $video;
102 }
103 function get_content($url, $cookie,$referfer='') {
104 //var_dump($post);exit;
105 $useragent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
106 /*if ($curl_loops++ >= $curl_max_loops) {
107 $curl_loops = 0;
108 return false;
109 }*/
110 if($referfer == ''){
111 $referfer = '#39;;
112 }
113 $header = array("Referer: ".$referfer);
114 $curl = curl_init();//初始化curl模块
115 curl_setopt($curl, CURLOPT_URL, $url);//登录提交的地址
116 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); //不验证证书
117 curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false); //不验证证书
118 curl_setopt($curl, CURLOPT_HEADER, 1);//是否显示头信息
119 curl_setopt($curl, CURLOPT_HTTPHEADER,$header);
120 //curl_setopt ($curl,CURLOPT_REFERER,'#39;);
121 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//是否自动显示返回的信息
122 curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie); //设置Cookie信息保存在指定的文件中
123 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie); //设置Cookie信息保存在指定的文件中
124 //curl_setopt($curl, CURLOPT_POST, 1);//post方式提交
125 //curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($post));//要提交的信息
126 //curl_setopt($curl,CURLOPT_POSTFIELDS,$post);
127
128 curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
129 //curl_setopt($curl, CURLOPT_REFERER, '#39;);
130 $data = curl_exec($curl);//执行cURL
131 $ret = $data;
132 list($header, $data) = explode("\r\n\r\n", $data, 2);
133 $http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
134 $last_url = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL);
135 //var_dump($last_url);
136 //$httpCode = curl_getinfo($curl,CURLINFO_HTTP_CODE);
137 //var_dump($httpCode);
138 //echo '<hr/>';
139 curl_close($curl);//关闭cURL资源，并且释放系统资源
140 if ($http_code == 301 || $http_code == 302) {
141 $matches = array();
142 preg_match('/Location:(.*?)\n/', $header, $matches);
143 $url = @parse_url(trim(array_pop($matches)));
144 if (!$url) {
145 $curl_loops = 0;
146 return $data;
147 }
148 $new_url = $url['scheme'] . '://' . $url['host'] . $url['path']
149 . (isset($url['query']) ? '?' . $url['query'] : '');
150 $new_url = stripslashes($new_url);
151 return get_content($new_url,$cookie);
152 } else {
153 $curl_loops = 0;
154 list($header, $data) = explode("\r\n\r\n", $ret, 2);
155 return $data;
156 }
157 }
158 function getUrl($data){
159 preg_match('/https:\/\/v.douyin.com\/.*\//' , $data, $matches);
160 if(empty($matches) || count($matches) != 1){
161 return false;
162 }else{
163 return $matches[0];
164 }
165 }
166 ?>
将test.php中的$data 换成自己复制出来的链接就可以了。返回的是json格式的内容，可以直接渲染在前台 也可以存到数据库里面。
到此 从抖音上抓包视频内容就完成了，写的不好，请大家勿喷。大家有什么意见，欢迎在评论区留言。我看到了会回复大家 ，谢谢。
