diff options
Diffstat (limited to 'system')
| -rw-r--r-- | system/helpers/email_helper.php | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/system/helpers/email_helper.php b/system/helpers/email_helper.php index 0516e938a..c7b3abada 100644 --- a/system/helpers/email_helper.php +++ b/system/helpers/email_helper.php @@ -42,12 +42,40 @@ if ( ! function_exists('valid_email')) /** * Validate email address * + * Updated to be more accurate to RFC822 + * see: http://www.iamcal.com/publish/articles/php/parsing_email/ + * * @param string * @return bool */ - function valid_email($address) + function valid_email($email) { - return (bool) preg_match('/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix', $address); + $qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]'; + + $dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]'; + + $atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c'. + '\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+'; + + $quoted_pair = '\\x5c[\\x00-\\x7f]'; + + $domain_literal = "\\x5b({$dtext}|{$quoted_pair})*\\x5d"; + + $quoted_string = "\\x22({$qtext}|{$quoted_pair})*\\x22"; + + $domain_ref = $atom; + + $sub_domain = "({$domain_ref}|{$domain_literal})"; + + $word = "({$atom}|{$quoted_string})"; + + $domain = "{$sub_domain}(\\x2e{$sub_domain})*"; + + $local_part = "{$word}(\\x2e{$word})*"; + + $addr_spec = "{$local_part}\\x40{$domain}"; + + return (bool) preg_match("!^{$addr_spec}$!", $email); } } |