adding is_numeric back into validation library
diff --git a/system/libraries/Validation.php b/system/libraries/Validation.php
index c81ad6b..d0714d0 100644
--- a/system/libraries/Validation.php
+++ b/system/libraries/Validation.php
@@ -557,6 +557,20 @@
}
// --------------------------------------------------------------------
+
+ /**
+ * Is Numeric
+ *
+ * @access public
+ * @param string
+ * @return bool
+ */
+ function is_numeric($str)
+ {
+ return ( ! is_numeric($str)) ? FALSE : TRUE;
+ }
+
+ // --------------------------------------------------------------------
/**
* Integer