帮忙看下 CURL 请求网页 api.php 的问题

Question

我想用 curl 来得到一个网页 api.php 里面的数据，可总是得不到数据。请问我写的代码问题出在哪里

这个是他自己的网页调用 api.php 的代码

$.POST('api.php',{'url':''},function(data){
    code...
},json);

这个是他网页调用时的 request header

Accept:application/json, text/javascript, */*; q=0.01
Accept-Encoding:gzip, deflate
Accept-Language:zh-CN,zh;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:50
Content-Type:application/x-www-form-urlencoded; charset=UTF-8
Cookie:Hm_lvt_XXXXX; a8167_pages=6; a8167_times=7
Host:XXX.cn
Origin:http://XXX.cn
Referer:http://XXX.cn/XXXX/?url=http://www.XXX.com/XXX.html
User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)
X-Requested-With:XMLHttpRequest

下面是我写的代码

<?php 
    $header[] = array('Content-Type: application/json','Content-Length: ' . strlen($postData));
    $data= '{"url" : "http://www.XXX.com/XXX.html"}';
    $refer = "http://XXX.cn/XXX/?url=http://www.XXX.com/XXX.html";


    $ch = curl_init(); 

    curl_setopt($ch, CURLOPT_URL,"http://XXX.cn/XXX/api.php"); 
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60); 
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_POSTFIELDS , $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_REFERER, $refer);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)");

    $output = curl_exec($ch); 

    var_dump($output);
    
    curl_close($ch);      
?>

谢谢大家了。

Answer 1

 $data= 'url=http://www.XXX.com/XXX.html';
 curl_setopt($ch, CURLOPT_POSTFIELDS , $data);
 //curl_setopt($ch, CURLOPT_HTTPHEADER, $header);注释这个