PHP的curl常用的5种写法

 // 1，抓取无访问控制文件

      $ch= curl_init();
      curl_setopt($ch, CURLOPT_URL,"http://localhost/mytest/phpinfo.php");
      curl_setopt($ch, CURLOPT_HEADER, false);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//如果把这行注释掉的话，就会直接输出
      $result=curl_exec($ch);
      curl_close($ch); 

 // 2，使用代理进行抓取

      $ch= curl_init();
      curl_setopt($ch, CURLOPT_URL,"http://blog.51yip.com");
      curl_setopt($ch, CURLOPT_HEADER, false);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
      curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, TRUE);
      curl_setopt($ch, CURLOPT_PROXY, 125.21.23.6:8080);
      //url_setopt($ch, CURLOPT_PROXYUSERPWD, 'user:password');如果要密码的话，加上这个
      $result=curl_exec($ch);
      curl_close($ch); 

 // 3，post数据后，抓取数据

      $ch= curl_init();
      /*在这里需要注意的是，要提交的数据不能是二维数组或者更高
      *例如array('name'=>serialize(array('tank','zhang')),'sex'=>1,'birth'=>'20101010')
      *例如array('name'=>array('tank','zhang'),'sex'=>1,'birth'=>'20101010')这样会报错的*/
      $data=array('name'=>'test','sex'=>1,'birth'=>'20101010');
      curl_setopt($ch, CURLOPT_URL,'http://localhost/mytest/curl/upload.php');
      curl_setopt($ch, CURLOPT_POST, 1);
      curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
      curl_exec($ch); 

 // 4.抓取一些有页面访问控制的页面

      $ch= curl_init();
      curl_setopt($ch, CURLOPT_URL,"http://club-china");
      /*CURLOPT_USERPWD主要用来破解页面访问控制的
      *例如平时我们所以htpasswd产生页面控制等。*/
      //curl_setopt($ch, CURLOPT_USERPWD, '231144:2091XTAjmd=');
      curl_setopt($ch, CURLOPT_HTTPGET, 1);
      curl_setopt($ch, CURLOPT_REFERER,"http://club-china");
      curl_setopt($ch, CURLOPT_HEADER, 0);
      $result=curl_exec($ch);
      curl_close($ch); 

 // 5.模拟登录到sina

     functionchecklogin($user,$password)
      {
      if( emptyempty($user) || emptyempty($password) )
      {
      return0;
      }
      $ch= curl_init( );
      curl_setopt($ch, CURLOPT_REFERER,"http://mail.sina.com.cn/index.html");
      curl_setopt($ch, CURLOPT_HEADER, true );
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, true );
      curl_setopt($ch, CURLOPT_USERAGENT, USERAGENT );
      curl_setopt($ch, CURLOPT_COOKIEJAR, COOKIEJAR );
      curl_setopt($ch, CURLOPT_TIMEOUT, TIMEOUT );
      curl_setopt($ch, CURLOPT_URL,"http://mail.sina.com.cn/cgi-bin/login.cgi");
      curl_setopt($ch, CURLOPT_POST, true );
      curl_setopt($ch, CURLOPT_POSTFIELDS,"&logintype=uid&u=".urlencode($user)."&psw=".$password);
      $contents= curl_exec($ch);
      curl_close($ch);
      if( !preg_match("/Location: (.*)\\/cgi\\/index\\.php\\?check_time=(.*)\n/",$contents,$matches) )
      {
      return0;
      }else{
      return1;
      }
      }  

      define("USERAGENT",$_SERVER['HTTP_USER_AGENT'] );
      define("COOKIEJAR", tempnam("/tmp","cookie") );
      define("TIMEOUT", 500 );  

      echochecklogin("zhangying215","xtaj227");