一个好用的正则匹配电话号手机号邮箱网址的方法

　　$str = "<a href='http://www.baidu.com' target='_blank'>百度</a>http://www<a href='http://www.sina.com' target='_blank'>新浪</a>kod";

　　preg_match_all("/<a href=([\"\'])(http:\/\/([\w\d\.])+)[^>]*>(.*?)<\/a>/i", $str, $matches);

　　echo "<pre>";

　　var_dump($matches[2]);

　　echo "<br />";

　　var_dump($matches[4]);

　　$emails = "[email protected]@163.com";

　　preg_match_all("/([a-z0-9_\-\.]+)@(([a-z0-9]+[_\-]?)\.)+[a-z]{2,3}/i", $emails, $matches);

　　var_dump($matches[0]);

　　$tel = "13911112222sf010-44444442dfg18811112222";

　　preg_match_all("/1[3,5,8]{1}[0-9]{1}[0-9]{8}|0[0-9]{2,3}-[0-9]{7,8}(-[0-9]{1,4})?/", $tel, $matches);

　　var_dump($matches);