allow 0 for ISINT

Florian Schaal

2016-01-10 e2c08e59a23fe28a2816c985422f796b9c6b39b0

allow 0 for ISINT

 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";