test.html
<!DOCTYPE html>
<html>
<head>test</head>
<body>
<a id="a5" href="111">wawa</a>
<a id="a6" href="222">hehe</a>
<a id="a7" href="333">haha</a>
<a id="a8" href="444">uuuu</a>
......
<b>
<a id="a1" href="111">wawa</a>
<a id="a2" href="222">hehe</a>
<a id="a3" href="333">haha</a>
<a id="a4" href="444">uuuu</a>
</b>
........
</body>
</html>想要用正则获取<b></b>标签内的每一个<a>的href
请问要怎么写?
php 正则
<!DOCTYPE html>
<html>
<head>test</head>
<body>
<a id="a5" href="111">wawa</a>
<a id="a6" href="222">hehe</a>
<a id="a7" href="333">haha</a>
<a id="a8" href="444">uuuu</a>
......
<b>
<a id="a1" href="111">wawa</a>
<a id="a2" href="222">hehe</a>
<a id="a3" href="333">haha</a>
<a id="a4" href="444">uuuu</a>
</b>
........
</body>
</html>
TTT;
preg_match_all('@<b>([^`]*?)<\/b>@i',$html,$match);
preg_match_all('@href="(.+?)"@i',$match[0][0],$matches);
var_dump($matches);
这是先把<b>里面的<a>先匹配出来,然后在匹配出href
有没有一个正则就匹配到的方法?
不过除了正则,还可以用dom解析,包括simplehtmldom