php vs java
我也是php忠实用户，使用php也有多年，但时不时碰到有人总是喷php低级？为什么呢，我个人认为有一下几种可能
1.php是弱类型语言，大部分程序员对数据类型很模糊，这个模糊主要指对数据存储的方式，占用字节等很模糊。你比如还有一些概念，如指针、堆，栈等很模糊，而这些内容往往在程序高级功能和内存优化时候就用的着，如果你不会，就意味着，你很低级，写的程序很垃圾~
2.常规php编程都是进程执行，在多进程或 多线程 方面支持很弱，或不支持，所以很容易出现io阻塞的问题，比如，你读取数据库，如果需要5s，那程序只能等待，却不能执行其他内容。
3.php在常规websocket和tcp编程方面比较弱。
4.因为php是解释性语言，不需要编译，动态执行。正是这点，会导致执行效率差，而且稍微不注意，则容易出现安全问题。
但你不得不承认，php确实给很多创业公司争得了时间，提高了效率。为广大技术提供了工作岗位。作为phper，我们始终要保持学习的态度，才能更好的将技术发挥到极致。
1.首先我们要搞清楚php的执行原理。特别是弄清楚 nginx +php 和 apache +php的区别。
2.学习swoole，从此进入多进程编程及协程编程，告别~（你懂的），从下节开始，我将分享我学习swoole的一些知识，感兴趣的可以关注我。
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35 2012 Gonadotropins 2431 women, 18 ovarian cancer cases, 30 years of follow- up SIR 1 Bisphosphonate zoledronic acid is known to inhibit bone resorption 37
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P values correspond with ANOVA for continuous variables that are normally distributed, Wilcoxon rank sum 2 groups or Kruskal Wallis 2 groups for continuous variables that are skewed, and the Pearson П‡ 2 or Fisher exact test for binary and categorical variables
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Other models of spontaneous ER PR positive mammary tumor development that progress through DCIS include chemical carcinogen induced tumors in rodents and transgenic mice