$emailPattern = '/^[a-zA-Z0-9_.-]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$/';
$post_email = strtolower( $_POST[ $field ] );
if( filter_var( $post_email, FILTER_VALIDATE_EMAIL ) )
{
if( preg_match( $email_pattern, $post_email ) )
{
return $post_email;
}else
{
return false;
}
}else
{
return false;
}
正在返回:
警告:preg_match(): Empty regular expression in /*/functions.php on line
$_POST[ $field ] 成功包含一个电子邮件地址:“something.something@something.uk.com”
可能出了什么问题?