PHP使用CURL模拟登录的方法_php技巧

WBOY
Release: 2016-05-16 20:11:20
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网上的很多模拟登录程序,大都是通过服务程序apache之类的运行,获取到验证码之后显示在网页上,然后填上再POST出去,这样虽然看起来很友 好,但是既然模拟登录,登录后所干的事情就不一定是短时间完成的,所以这就要受到php最大执行时间的限制,而且有些操作还有可能权限不足。

本文提供了一个程序实例,思路就是获取到验证码之后把验证码存储为一个图片,然后程序休眠20秒,在20秒之后由用户手动查看图片,并把验证码填写 到code.txt文件中,20秒休眠完成后,程序会读code.txt的验证码,这样再带着验证码进行登录操作。具体代码如下:

/** * 模拟登录 */ //初始化变量 $cookie_file = "tmp.cookie"; $login_url = "http://xxx.com/logon.php"; $verify_code_url = "http://xxx.com/verifyCode.php"; echo "正在获取COOKIE...\n"; $curlj = curl_init(); $timeout = 5; curl_setopt($curl, CURLOPT_URL, $login_url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $timeout); curl_setopt($curl,CURLOPT_COOKIEJAR,$cookie_file); //获取COOKIE并存储 $contents = curl_exec($curl); curl_close($curl); echo "COOKIE获取完成,正在取验证码...\n"; //取出验证码 $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $verify_code_url); curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file); curl_setopt($curl, CURLOPT_HEADER, 0); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); $img = curl_exec($curl); curl_close($curl); $fp = fopen("verifyCode.jpg","w"); fwrite($fp,$img); fclose($fp); echo "验证码取出完成,正在休眠,20秒内请把验证码填入code.txt并保存 "; //停止运行20秒 sleep(20); echo "休眠完成,开始取验证码...\n"; $code = file_get_contents("code.txt"); echo "验证码成功取出:$code\n"; echo "正在准备模拟登录...\n"; $post = "username=maben&pwd=hahahaha&verifycode=$code"; $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_HEADER, false); curl_setopt($curl, CURLOPT_RETURNTRANSFER,1); curl_setopt($curl, CURLOPT_POSTFIELDS, $post); curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file); $result=curl_exec($curl); curl_close($curl); //这一块根据自己抓包获取到的网站上的数据来做判断 if(substr_count($result,"登录成功")){ echo "登录成功\n"; }else{ echo "登录失败\n"; exit; } //OK,开始做你想做的事吧。。。。。
Copy after login

以上所述就是本文的全部内容了,希望大家能够喜欢。

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