网页爬虫 - 用PHP如何爬取一个网页的验证码
<code>需要点击后 </code>
不需要破解 破解我觉得很难
如何点击才能返回它的图片 得到它的图片
回复内容：
<code>需要点击后 </code>
不需要破解 破解我觉得很难
如何点击才能返回它的图片 得到它的图片
你用 firebug 看下他获取验证码的请求地址。一般这种可能ajax。 如果只是获取图片， 你只要刷获取验证码的链接就可以了。
点击之后应该会触发一个ajax，抓包抓到它，直接请求那个url就好。
直接获取点击后触发的URL就可以。至于你说的t=XXX参数，可以看下页面代码，一般来说用在验证码上的都是随机数或者当前时间戳（为了防止被cache，一般参数不一样的请求不会被cache），如果是来自于服务器动态生成的，就再多写个请求获取参数
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