phpfilter_var('sgamgee@example.com',FILTER_VALIDATE_EMAIL);//Returns "sgamgee@example.com". This is a valid email address.filter_var('sauron@mordor',FILTER_VALIDATE_EMAIL);// Returns boolean false! This is *not* a valid email address.?> 进一步阅读 PHP手册:filter_var() PHP手册:过滤器的...