PHP中curl如何设置header？

PHP中curl如何设置header？

在PHP扩展库curl中可以通过函数“curl_setopt()”设置选项常量“CURLOPT_HTTPHEADER”，来设置header，使用时将header数据传入第3个参数即可。

<?php  $header  = array(   'x-api-key:'.'b8602c0361111415a221759cdeb9e636',   'Content-Type:'.'application/x-www-form-urlencoded; charset=UTF-8' );  /**  * @param $url  * @param null $data  * @return bool|string  */ public function http_request($url, $data = null, $header = null){       $curl = curl_init();     if(!empty($header)){         curl_setopt($curl, CURLOPT_HTTPHEADER, $header);         curl_setopt($curl, CURLOPT_HEADER, 0);//返回response头部信息     }       curl_setopt($curl, CURLOPT_URL, $url);     curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);     curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);     if (!empty($data)) {         curl_setopt($curl, CURLOPT_HTTPGET, 1);         curl_setopt($curl, CURLOPT_POSTFIELDS,http_build_query($data));     }       curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);     $output = curl_exec($curl);     curl_close($curl);     return $output; }

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