<?
$returnstr = ' <a href= <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>>dsfasdffa <div> </div>sfxxxxxx <a href= <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>>';
preg_match_all("/<a\shref=(\s*<\?(.*?)\?>(.*?)<\?(.*?)\?>)>/",$returnstr,$m);
print_r($m[1]);
?>结果:Array
(
[0] => <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>
[1] => <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>
)
$returnstr = ' <a href= <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>>dsfasdffa <div> </div>sfxxxxxx <a href= <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>>'; preg_match_all("/href=(.+?[^\?])>/", $returnstr, $arr);print_r($arr[1]);
?>
结果:
Array
(
[0] => <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>
[1] => <?php echo $aa ?>blog/?cid= <?php echo $category_id;?>
)