PHP快速准确的检测QQ是否在线类。

<?php
/*@
 *@ (C) 201e - 醉忆花颜 429590191@qq.com
 *@
 *@ Time:2013-5-2
 *@
 *@ Name:qqwp.php
 */
 
//header("Content-type:text/html; Charset=UTF-8");

function qq_status(){
    if (empty($qq))$qq = 429590191;
    $url = &#39;http://wpa.qq.com/pa?p=2:&#39;.$qq.&#39;:52&#39;;
    $Headers = get_headers($url, 1);
    if ($Headers[&#39;Location&#39;]==&#39;http://pub.idqqimg.com/qconn/wpa/button/button_121.gif&#39;){
        $Status = 1;  //QQ在线
    }elseif ($Headers[&#39;Location&#39;]==&#39;http://pub.idqqimg.com/qconn/wpa/button/button_120.gif&#39;){
        $Status = 2;  //QQ离线
    }else {
        $Status = 0;  //未知
    }
        
    Return $Status;
        
}

//测试数据

$qqwp = qq_status(&#39;429590191&#39;);  //测试QQ是否在线,返回1=在线,返回2=离线,返回0=错误

if ($qqwp==1){
    echo &#39;QQ在线&#39;;
}elseif ($qqwp==2){
    echo &#39;QQ离线&#39;;
}else {
    echo &#39;出错了&#39;;
}

?>