CommonDBTM::filterValues PHP Method

    function filterValues($display = true)
    {
        // MoYo : comment it because do not understand why filtering is disable
        // if (in_array('CommonDBRelation', class_parents($this))) {
        //    return true;
        // }
        //Type mismatched fields
        $fails = array();
        if (isset($this->input) && is_array($this->input) && count($this->input)) {
            foreach ($this->input as $key => $value) {
                $unset = false;
                $regs = array();
                $searchOption = $this->getSearchOptionByField('field', $key);
                if (isset($searchOption['datatype']) && (is_null($value) || $value == '' || $value == 'NULL')) {
                    switch ($searchOption['datatype']) {
                        case 'date':
                        case 'datetime':
                            // don't use $unset', because this is not a failure
                            $this->input[$key] = 'NULL';
                            break;
                    }
                } else {
                    if (isset($searchOption['datatype']) && !is_null($value) && $value != '' && $value != 'NULL') {
                        switch ($searchOption['datatype']) {
                            case 'integer':
                            case 'count':
                            case 'number':
                            case 'decimal':
                                $value = str_replace(',', '.', $value);
                                if ($searchOption['datatype'] == 'decimal') {
                                    $this->input[$key] = floatval(Toolbox::cleanDecimal($value));
                                } else {
                                    $this->input[$key] = intval(Toolbox::cleanInteger($value));
                                }
                                if (!is_numeric($this->input[$key])) {
                                    $unset = true;
                                }
                                break;
                            case 'bool':
                                if (!in_array($value, array(0, 1))) {
                                    $unset = true;
                                }
                                break;
                            case 'ip':
                                $address = new IPAddress();
                                if (!$address->setAddressFromString($value)) {
                                    $unset = true;
                                } else {
                                    if (!$address->is_ipv4()) {
                                        $unset = true;
                                    }
                                }
                                break;
                            case 'mac':
                                preg_match("/([0-9a-fA-F]{1,2}([:-]|\$)){6}\$/", $value, $regs);
                                if (empty($regs)) {
                                    $unset = true;
                                }
                                // Define the MAC address to lower to reduce complexity of SQL queries
                                $this->input[$key] = strtolower($value);
                                break;
                            case 'date':
                            case 'datetime':
                                // Date is already "reformat" according to getDateFormat()
                                $pattern = "/^([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})";
                                $pattern .= "([_][01][0-9]|2[0-3]:[0-5][0-9]:[0-5]?[0-9])?/";
                                preg_match($pattern, $value, $regs);
                                if (empty($regs)) {
                                    $unset = true;
                                }
                                break;
                            case 'itemtype':
                                //Want to insert an itemtype, but the associated class doesn't exists
                                if (!class_exists($value)) {
                                    $unset = true;
                                }
                            case 'email':
                            case 'string':
                                if (strlen($value) > 255) {
                                    $this->input[$key] = substr($value, 0, 254);
                                }
                                break;
                            default:
                                //Plugins can implement their own checks
                                if (!$this->checkSpecificValues($searchOption['datatype'], $value)) {
                                    $unset = true;
                                }
                                // Copy value if check have update it
                                $this->input[$key] = $value;
                                break;
                        }
                    }
                }
                if ($unset) {
                    $fails[] = $searchOption['name'];
                    unset($this->input[$key]);
                }
            }
        }
        if ($display && count($fails)) {
            //Display a message to indicate that one or more value where filtered
            //TRANS: %s is the list of the failed fields
            $message = sprintf(__('%1$s: %2$s'), __('At least one field has an incorrect value'), implode(',', $fails));
            Session::addMessageAfterRedirect($message, INFO, true);
        }
    }