diff options
Diffstat (limited to 'inc/mail.php')
| -rw-r--r-- | inc/mail.php | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/inc/mail.php b/inc/mail.php index a596c38f7..02434cf3c 100644 --- a/inc/mail.php +++ b/inc/mail.php @@ -144,14 +144,23 @@ function mail_encode_address($string,$header='',$names=true){ * Uses a regular expresion to check if a given mail address is valid * * May not be completly RFC conform! + * @link http://www.faqs.org/rfcs/rfc2822.html (paras 3.4.1 & 3.2.4) * - * @link http://www.webmasterworld.com/forum88/135.htm + * @author Chris Smith <chris@jalakai.co.uk> * * @param string $email the address to check * @return bool true if address is valid */ + +// patterns for use in email detection and validation +// NOTE: there is an unquoted '/' in RFC2822_ATEXT, it must remain unquoted to be used in the parser +// the pattern uses non-capturing groups as captured groups aren't allowed in the parser +// select pattern delimiters with care! +if (!defined('RFC2822_ATEXT')) define('RFC2822_ATEXT',"0-9A-Za-z!#$%&'*+/=?^_`{|}~-"); +if (!defined('PREG_PATTERN_VALID_EMAIL')) define('PREG_PATTERN_VALID_EMAIL', '['.RFC2822_ATEXT.']+(?:\.['.RFC2822_ATEXT.']+)*@(?:[0-9A-Za-z][0-9A-Za-z-]*\.)+[A-Za-z]{2,4}'); + function mail_isvalid($email){ - return eregi("^[0-9a-z]([+-_.]?[0-9a-z])*@[0-9a-z]([-.]?[0-9a-z])*\\.[a-z]{2,4}$", $email); + return preg_match('<^'.PREG_PATTERN_VALID_EMAIL.'$>', $email); } /** |