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$str = '<a id="top8" href="http://list.mp3.baidu.com/song/A.htm?top8" class="p14" target="_top">¸èÇúÁбí</a><br><a target="_blank" id="bp" href="http://list.mp3.baidu.com/list/bangping.html" class="p14">ÖÐÎĽðÇú°ñ</a><br><td nowrap="nowrap">&#8226;&nbsp;<a id="top19" href="qingyinyue.html?top19" class="p14" target="_top">ÇáÒôÀÖ</a></td>'; copyright dedecms
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$pat = '/<a(.*?)href="(.*?)"(.*?)>(.*?)<\/a>/i';
preg_match_all($pat, $str, $m);
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print_r($m[2]);
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for($i=0;$i<count($m[2]) ;$i++ ){
    echo '<li><a href="'.$_SERVER['PHP_SELF'].'?url='.$m[2][$i].'">'.$m[4][$i].'</a>';
}
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 * @example
 * require 'MyCache.class.php';
 * $mc = new MyCache("./test/cache");
 * $a = "hello world111";
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