发起请求

<?php


namespace app\common\fun;


class HttpClient
{
    /**
     * 发起请求
     * @param string $url 请求地址
     * @param string $param 请求数据包
     * @return   string      请求返回数据
     */
    public static function http_post($url, $param)
    {
        $oCurl = curl_init();
        if (stripos($url, "https://") !== FALSE) {
            curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
        }
        if (is_string($param)) {
            $strPOST = $param;
        } else {
            $aPOST = array();
            foreach ($param as $key => $val) {
                $aPOST[] = $key . "=" . urlencode($val);
            }
            $strPOST = join("&", $aPOST);
        }

        curl_setopt($oCurl, CURLOPT_URL, $url);
        curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($oCurl, CURLOPT_POST, true);
        curl_setopt($oCurl, CURLOPT_HTTPHEADER, array(
                'X-AjaxPro-Method:ShowList',
                'Content-Type: application/json; charset=utf-8',
                'Content-Length: ' . strlen($strPOST))
        );
        curl_setopt($oCurl, CURLOPT_POSTFIELDS, $strPOST);
        $sContent = curl_exec($oCurl);
        $aStatus = curl_getinfo($oCurl);
        curl_close($oCurl);
        if (intval($aStatus["http_code"]) == 200) {
            return $sContent;
        } else {
            return false;
        }
    }
}