PHP 邮箱正则表达式代码如下：
/^([a-z0-9])(([-a-z0-9._])*([a-z0-9]))*\@([a-z0-9])*(\.([a-z0-9])([-a-z0-9_-])([a-z0-9])+)*$/i
实例演示：
<?php $mail = 'runoob@runoob.com'; //邮箱地址$pattern = '/^([a-z0-9])(([-a-z0-9._])*([a-z0-9]))*\@([a-z0-9])*(\.([a-z0-9])([-a-z0-9_-])([a-z0-9])+)*$/i'; //正则表达式preg_match($pattern, $mail, $matches);var_dump($matches); //输出匹配结果?>
