php抓取网页标签(php抓取网页标签的字符串在form表单中起到什么作用？)

　　php抓取网页标签(php抓取网页标签的字符串在form表单中起到什么作用？)

　　php抓取网页标签的字符串在form表单中起到什么作用？如何捕捉到不属于自己的字符？

　　一、作用爬虫抓取网页上的字符，字符串是没有内容的，所以都被用字符串编码处理，来代替字符。所以我们可以通过开启字符编码的服务器，从而得到任意字符的内容。所以，抓取网页标签，首先要在chrome浏览器中访问。这里需要安装php-extension-reader这个插件。

　　二、流程

　　1、开启“翻译服务器”，推荐使用chrome浏览器来执行这个网址。

　　2、爬虫打开c:\users\wangxie\appdata\local\google\chrome\userdata\application\userdata\chrome开发者工具\userdata\manifest\default这个文件夹这个文件夹中有4个文件sitemap.php、content.php、images.php、siteid.php，各位大佬可以根据自己的需要添加。这里面有三个表单的标签，为post，action，cookie。

　　三、操作

　　1、代码例子这里的抓取网页标签的字符串，在浏览器中的格式如下sitemap。php#content_stringvarall_page='\w\u\h\n\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d\d。