正则匹配问题 求指教
获取一个A标签的Href属性
被匹配的字符
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -->preg_match('/<a([\s\S]*)href=(["\']?)([\s\S]*)\1\sid([\s\S]*)</a>/i', $str, $matches)
$str=<<<STR <a class="a" href="http://www.baidu.com/" id="a1">连接1</a> <a class="a" href='http://www.baidu.com/' id="a2">连接2</a> <a class="a" href=http://www.baidu.com/ id="a3">连接3</a> <a class="a" href="http://www.baidu.com/ id="a3">连接3</a> STR; preg_match_all('/<a[^>]+href=(["\']?)([^\s"\']+)\1[^>]*>/',$str,$matches); print_r($matches[2]); <br><font color="#e78608">------解决方案--------------------</font><br>
$str=<<<html <div class="a" href="http://www.baidu.com/" id="a1">连接1</a> <div class="a" href='http://www.baidu.com/' id="a2">连接2</a> <div class="a" href=http://www.baidu.com/ id="a3">连接3</a> html; preg_match_all('/href=(["\'])?([^\s"\']+)/is', $str, $matches) ; print_r($matches); <br><font color="#e78608">------解决方案--------------------</font><br>
[User:root Time:14:14:52 Path:/home/liangdong/php]$ php preg.php Array ( [0] => Array ( [0] => <div class="a" href="http://www.baidu.com/" [1] => <div class="a" href='http://www.baidu.com/' [2] => <div class="a" href=http://www.baidu.com/ ) [1] => Array ( [0] => " [1] => ' [2] => ) [2] => Array ( [0] => http://www.baidu.com/ [1] => http://www.baidu.com/ [2] => http://www.baidu.com/ ) ) [User:root Time:14:14:53 Path:/home/liangdong/php]$ cat preg.php <?php $str = <<<EOF <div class="a" href="http://www.baidu.com/" id="a1">连接1</a> <div class="a" href='http://www.baidu.com/' id="a2">连接2</a> <div class="a" href=http://www.baidu.com/ id="a3">连接3</a> EOF; preg_match_all('/<div class="a" href=(["\']?)([^\s\'"]*)\1/is', $str, $matches); print_r($matches); ?> <div class="clear"> </div>