php常用函数集

网络请求：

 /**
  * 发起HTTPS请求
  */
 function curl_post($url,$data=null,$header=null,$post=0)
 {
     //初始化curl
     $ch = curl_init();
     //参数设置
     $res= curl_setopt ($ch, CURLOPT_URL,$url);
     curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
     curl_setopt ($ch, CURLOPT_HEADER, 0);
     curl_setopt($ch, CURLOPT_POST, $post);
     if($post && !is_null($data))
         curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
     curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
     if (!is_null($header))
         curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
     $result = curl_exec ($ch);
     //连接失败
     curl_close($ch);
     return $result;
 }