效果：
代码：
<?php
/**
* 说明：一张显示QQ在线状态的图片，上边可以自定义最长四个文字，彩色为在线，灰度为不在线
* 比如：一张灰度的，上书“技术支持”的图片
* 一张彩色的，上书“客户服务”的图片
* 参数：?qq=123456&string=客户服务 // qq用来判断是否在线，string是写的文字
* 注意：文字最长四个字且不会居中
* 作者：upall,http://upall.cn/
* 日期：22:59 2011年9月13日
*/
$id = '123456';
$string = '在线客服';
//$font = '../Signature/msyh.ttf'; // 字体，这里采用“微软雅黑”，请自备，路径可自行修改
$font = 'simsun.ttc'; // 宋体，微软雅黑没有了柔化效果挺难看的
$allowedHost = array('upall.cn'); // 用于防盗链
$data[0] = 'R0lGODlhSgAWAOYAAAAAAM/j76XT9Y2bpY2Njmpub+bw9lVVVXqt08Xb51mNs4uluuXy/LnDyiUlJdvp8bzT4Z+yvs3h7pLF6+zs7JSmsTw8PXl6ehwcHKjC1bXd+aWqrt7e3tjj6l1fYOb39+Ht9bTL2tLS0/j7/Wuewu30+YK226Wlpcbd7IqTmMXO04OEhGGRs3R0dPj4+P///7W2t5mZmaq8x7nU5pSttcPW4oi84W+jyX6Gi3V/hpfK76y/ytTm8N7m9+/3/8zMzKW5xpSUlGZmZp6mq73W5Nzv/c7n+ZyuuWSYvnF2eXemycvZ4oSEjLvI0IzA5ZrN8qqqqqezu67Czv///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEHAFMALAAAAABKABYAAAf/gFNFGgKFhoeIiYqLjI2OhRpFU0YaDCOXmJmam5ydnp+glwwaRgIlp6ipqqusra6vsKsCT6wNQg4OGB4wBgaxv8DBp086vcYGGwcWuRjNSR3H0dLT1NXW0zoT0SoWFhwvAC8czUPQ1+fo6ccTEyDu7gW44AThzR4qD+/6+/z9/v8A3U1wss9Cs2/hxmGw0KBDwIcQI+pzYkPfA4MrYvyAEmMFAQwOoiyRSLIkPxsmHqh8oOKCkAMEYhCYecBDiyH4VurcybOnz59AH5hIuRJHiyAEXh44IKRFUiFNeASdSrXqShMIeGiN4uDAhZgxTsCQ+dFBiiVa06pdy7at27dv/xFk1VpgIYcWF8SK4EDBRbMDTSTAHUy4MFsEStLmKuAiBhQXkF+88NssSg3DmDO3VXIjgGcMOVa4OHHCheTJLlYIwXAEgufXsGPLnk27Nu0bJCTohiBjBYW+pyG7IDDgiAwIupMrX868ufPnzknk1p1gBwEov4W74BAjxgApNRJAH0++PHMSSFCoRxEDxgkmGkX8kAkFCoEdCdbr38+/v///AKKARHrrRUHACitcgEMKOCQxEwEpRABBgBRWaOF6SJAww3oQ7HAEDTQcAcQOQBxRwYnHXajiivrNgEQISsyQwIwQhGBjCBDkeCOOM/bo449ABinkkELOoMQCU2SAhBQCTDbp5JNQRinllFRWySQLC3AQCAA7'; //不在线
$data[1] = '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'; // 在线
// 初始化
if (isset($_GET['qq'])){
$id = (int)(trim($_GET['qq']));
}
if (isset($_GET['string'])){
$string = urldecode(trim($_GET['string']));
}
$status = 'http://webpresence.qq.com/getonline?Type=1&'.$id.':'; // 腾讯提供的查询在线状态的“接口”
$status = @file_get_contents($status); // 值类似：online[0]=1;
$status = (int)substr($status,-2,1); // 取分号前的值
if ($status != 1 && $status != 0 ){ // 腾讯只提供了“在线”“不在线”这两个状态
exit('Error Status !');
}
// 防盗链
if (empty($_SERVER['HTTP_REFERER'])){
$fromHost = '';
}else{
$fromUrl = $_SERVER['HTTP_REFERER'];
preg_match_all("/(.+\.)?(\w+\.\w+)/",$fromUrl,$fromHost); // 取顶级域名
$fromHost = $fromHost[2][0];
}
if (!in_array($fromHost,$allowedHost)){ // 非许可的域名访问时输出固定的文字“禁止盗链”
$string = '禁止盗链';
}
// 生成图像
$data = $data[$status];
$data = base64_decode($data);
$image = @imagecreatefromstring($data);
$textcolor = @imagecolorallocate($image, 0, 0, 0);
//背景，字体大小，倾斜，坐标X，坐标Y，字体文件，写入的文字
@imagettftext($image,9,0,22,16,$textcolor,$font,$string);
// 输出
header('content-type:image/gif');
imagegif($image);
?>
＜完＞
