Remove regex validation in favor of filter_var

1 files changed, 1 insertions, 33 deletions

diff --git a/system/helpers/email_helper.php b/system/helpers/email_helper.php
index 449aadfc2..ea9f6105d 100644
--- a/system/helpers/email_helper.php
+++ b/system/helpers/email_helper.php
@@ -50,39 +50,7 @@ if ( ! function_exists('valid_email'))
 	 */
 	function valid_email($email)
 	{
-		// Use PHP's filters if they exist
-		if (function_exists('filter_var'))
-		{
-			return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
-		}
-	
-		// Fallback based on RFC822
-		$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}$!", $email);
+		return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
 	}
 }