enable use of param in a callback rule; it's a sugestion of solution, another way can be used, this feature seems forgotten;
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index d370d75..a34809e 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -488,7 +488,7 @@
if ( ! in_array('required', $rules) AND is_null($postdata))
{
// Before we bail out, does the rule contain a callback?
- if (preg_match("/(callback_\w+)/", implode(' ', $rules), $match))
+ if (preg_match("/(callback_\w+(\[.*?\])?)/", implode(' ', $rules), $match))
{
$callback = TRUE;
$rules = (array('1' => $match[1]));
@@ -1378,4 +1378,4 @@
// END Form Validation Class
/* End of file Form_validation.php */
-/* Location: ./system/libraries/Form_validation.php */
\ No newline at end of file
+/* Location: ./system/libraries/Form_validation.php */