PHP抓取网页代码，图片路径问题
我现在首先用php代码抓取连接网址的代码。、
ob_start();
$ch = curl_init();
curl_setopt( $ch, CURLOPT_URL, $url );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
$retrievedhtml=curl_exec( $ch );
ob_end_clean();
curl_close( $ch );
现在遇到一个情况，比如说网页的网址是http://www.aaa.com/bq/
然后网页里面图片的链接地址是
这时按理说图片的完全网址应该是http://www.aaa.com/bq/cq/a.jpg
但是我转换后发现图片显示不出来，后来才发现图片的路径其实是
http://www.aaa.com/cq/a.jpg
请问这个是怎么解释，应该怎么判断这样的路径？
------解决方案--------------------
按常理说才不是/bq/cq/a.jpg呢
你好好看看这路径:
/到根了
图片路径就是http://www.aaa.com/cq/a.jpg
你多测几张图片立马明白，/前面没有点，跳到根，有一个点就相对当前路径别搞混了
------解决方案--------------------
形如 的是相对域名的
形如 
或 
的是相对 url 的
你难道自己不写网站的吗？
光抓人家的？
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