<a href="http://www.macaucentral.com/dev/index.php/beauty-content/6579-celina-beauty-centre">莎莉娜美容中心 Celina ...</a>

http://www.macaucentral.com/dev/index.php/beauty-content/6579-celina-beauty-centre

<?php
$str='<a href="http://www.macaucentral.com/dev/index.php/beauty-content/6579-celina-beauty-centre">莎莉娜美容中心 Celina ...</a>';
$pattern='/<a[^>]*href="([^"\']*)"/';
preg_match($pattern,$str,$matchs);
print_r($matchs);

------解决方案--------------------

preg_match('/href="([^"]*)"/',$str,$arr);
echo $arr[1];