$cmh = curl_multi_init();
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_COOKIE, ‘PHPSESSID=‘ . $_COOKIE[‘PHPSESSID‘]);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch,CURLOPT_TIMEOUT, 1);
    curl_multi_add_handle($cmh, $ch);
    curl_multi_exec($cmh, $active);
    echo "-------------End---------------\n";
    /*
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_COOKIE, ‘PHPSESSID=‘ . $_COOKIE[‘PHPSESSID‘]);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch,CURLOPT_TIMEOUT, 1);
    curl_exec($ch);
    curl_close($ch);
    echo "ss";
原文:http://www.cnblogs.com/yangyuqiu/p/6207311.html