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PHP面向对象简易验证码类

PHP简单验证码类,可直接使用,替换字体路径

<?phpclass authCode{    private static $instance = null;     #实例对象    private $width = 120;                #图片宽度    private $height = 40;                #图片高度    private $font = 'font/elephant.ttf'; #字体文件路径    private $fontSize = 14;              #字体大小    private $strLen = 6;                 #字符个数    private $auth_code_str = null;       #验证码结果    private $imgResult = null;           #图片资源        #入口文件 静态方法调用 实例化对象 可用 对象方法调用    public static function img()    {        if (!(self::$instance instanceof self)) {            self::$instance = new self();        }        return self::$instance;    }         #随机颜色    private function randomColor($img = null, $min = 0, $max = 255)    {        $rgb = [];        for ($i = 1; $i <= 3; $i++) {            $rgb[] = str_pad(rand($min, $max), 3, 0, STR_PAD_LEFT);        }        return imagecolorallocate($img, $rgb[0], $rgb[1], $rgb[2]);    }        #随机字符串    private function randomStr($num = 4)    {        if ($num > 0) {            $string = array_merge(range('a', 'z'), range(0, 9), range('A', 'Z'), range(0, 9));            for ($i = 1; $i <= $num; $i++) {                shuffle($string);                $this->auth_code_str .= array_pop($string);            }        }        return $this;    }         #创建验证码    public function createAuthCode(&$codeStr = false)    {        if (!$this->auth_code_str) {            $this->randomStr($this->strLen);        }        if ($codeStr !== false && empty($codeStr)) {            $codeStr = $this->auth_code_str;        } else if (!empty($codeStr) && $codeStr !== false) {            $this->auth_code_str = $codeStr;        }        $this->imgResult = imagecreatetruecolor($this->width, $this->height);        $background = $this->randomColor($this->imgResult, 200);        imagefilledrectangle($this->imgResult, 0, 0, $this->width, $this->height, $background);        $y = ($this->height - $this->fontSize);        $string = str_split($this->auth_code_str, 1);        for ($i = 0; $i < count($string); $i++) {            $frontColor = $this->randomColor($this->imgResult, 0, 200);            imagefttext($this->imgResult, $this->fontSize, rand(0, 10), ($this->fontSize + 2) * $i + 10, $y, $frontColor, $this->font, $string[$i]);        }        return $this;    }          #生成线    public function line($line = 3)    {        $line = $line ?: 3;        for ($i = 1; $i <= $line; $i++) {            $lineColor = $this->randomColor($this->imgResult, 0, 200);            imageline($this->imgResult, rand(0, $this->width / 5), rand(5, $this->height - 5), rand($this->width / 1.3, $this->width), rand(5, $this->height - 5), $lineColor);        }        return $this;    }        #噪点    public function pixel($num = 50){        $num = $num ?: 3;        for ($i = 1; $i <= $num; $i++) {            $lineColor = $this->randomColor($this->imgResult, 0, 100);            imagesetpixel($this->imgResult, rand(0, $this->width), rand(0, $this->height), $lineColor);        }        return $this;    }         #设置大小    public function size($width = null, $height = null)    {        $this->width = $width ?: 120;        $this->height = $height ?: 40;        return $this;    }        #设置字体大小    public function fontSize($fontsize = 14)    {        $this->fontSize = $fontsize ?: 14;        return $this;    }        #设置字体    public function font($file = null)    {        if (is_null($file) === true) {            $this->font = 'font/elephant.ttf';        } else {            $this->font = $file;        }        return $this;    }        #设置长度    public function strlen($num = null)    {        $this->strLen = $num ?: 6;        return $this;    }        public function display()    {        ob_end_flush();        header("content-type:image/jpeg");        imagejpeg($this->imgResult, null, 100);        imagedestroy($this->imgResult);        exit;    }}#简单调用方法authCode::img()->createAuthCode()->display();/*#指定字符串调用$string = 'abc123';authCode::img()->createAuthCode($string)->display(); #设置图片大小、字数、字体大小authCode::img()->strlen(8)->size(300,100)->fontSize(30)->createAuthCode()->display(); #添加噪点authCode::img()->createAuthCode()->line()->pixel()->display();*/    ?>

以上便是关于验证码类的封装过程,可以直接使用。若有错误请指出。

更多相关问题请访问PHP中文网:PHP视频教程

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文章来源:智云一二三科技

文章标题:PHP面向对象简易验证码类

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关于作者: 智云科技

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