php 异步请求

/**
* 发送HTTP请求并获得响应
* @param url 请求的url地址
* @param param 发送的http参数
*/

function makeRequest($url, $param, $httpMethod = 'GET') {
        $oCurl = curl_init();
        if (stripos($url, "https://") !== FALSE) {
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);
        }

        if ($httpMethod == 'GET') {
                curl_setopt($oCurl, CURLOPT_URL, $url . "?" . http_build_query($param));
                curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1);
        } else {
                curl_setopt($oCurl, CURLOPT_URL, $url);
                curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1);
                curl_setopt($oCurl, CURLOPT_POST, 1);
                curl_setopt($oCurl, CURLOPT_POSTFIELDS, http_build_query($param));
        }

        $sContent = curl_exec($oCurl);
        $aStatus = curl_getinfo($oCurl);
        curl_close($oCurl);
        if (intval($aStatus["http_code"]) == 200) {
                return $sContent;
        } else {
                return FALSE;
        }
}