From ec42ad14f7a3984a4e882a6b0e1b7f32ea719cd0 Mon Sep 17 00:00:00 2001
From: Till Brehm <tbrehm@ispconfig.org>
Date: Sun, 10 Jan 2016 08:39:59 -0500
Subject: [PATCH] Updated cron form.

---
 interface/lib/classes/tform_base.inc.php |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/interface/lib/classes/tform_base.inc.php b/interface/lib/classes/tform_base.inc.php
index 6de1cee..f6f6690 100644
--- a/interface/lib/classes/tform_base.inc.php
+++ b/interface/lib/classes/tform_base.inc.php
@@ -979,7 +979,7 @@
 				break;
 			case 'ISINT':
 				if(function_exists('filter_var') && $field_value < 2147483647) {
-					if($field_value != '' && filter_var($field_value, FILTER_VALIDATE_INT) === false) {
+					if($field_value != '' && filter_var($field_value, FILTER_VALIDATE_INT, array("options" => array('min_range'=>0))) === false) {
 						$errmsg = $validator['errmsg'];
 						if(isset($this->wordbook[$errmsg])) {
 							$this->errorMessage .= $this->wordbook[$errmsg]."<br />\r\n";

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