phpfsockopen并发,该怎么解决

if (isset($_GET['act']) && $_GET['act'] == 'sendMail') {

    sendEmail();// 发送邮件操作

}



function fSockGet($url, $timeout = 3)

{

    $info = parse_url($url);

    extract($info);

    $query = isset($query) ? trim($query) : '';

    $path = isset($path) ? trim($path) : '';



    $fp = fsockopen($host, 80, $errno, $errstr, $timeout);

    if (!$fp) {

        exit("$errstr ($errno)
\n");

    }



    $write = fwrite($fp, "GET {$path}?{$query} HTTP/1.0\r\nHost: {$host}\r\n\r\n");



//    while (!feof($fp)) {

//        echo fread($fp, 4096);

//    }

}





$url = "http://mydir.com/index.php?act=sendMail";

$emailList = array(...);

foreach ($emailList as $email) {

    fSockGet($url);

}