2 files changed, 5 insertions, 3 deletions
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 823c71dbf0..81a11f4867 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -556,11 +556,11 @@ function _hash_crypt_private($password, $setting, &$itoa64)
 *
 * @param string $email		Email address
 *
-* @return string			Big Integer
+* @return string			Unsigned Big Integer
 */
 function phpbb_email_hash($email)
 {
-	return crc32(strtolower($email)) . strlen($email);
+	return sprintf('%u', crc32(strtolower($email))) . strlen($email);
 }
 
 /**
diff --git a/phpBB/includes/functions_convert.php b/phpBB/includes/functions_convert.php
index 8a1d07c8e5..048212bcfe 100644
--- a/phpBB/includes/functions_convert.php
+++ b/phpBB/includes/functions_convert.php
@@ -205,10 +205,12 @@ function get_group_id($group_name)
 
 /**
 * Generate the email hash stored in the users table
+*
+* Note: Deprecated, calls should directly go to phpbb_email_hash()
 */
 function gen_email_hash($email)
 {
-	return (crc32(strtolower($email)) . strlen($email));
+	return phpbb_email_hash($email);
 }
 
 /**