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<?php
/**
* Project: SmartyValidate: Form Validator for the Smarty Template Engine
* File: validate_criteria.isFileType.php
* Author: Monte Ohrt <monte at newdigitalgroup dot com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @link http://www.phpinsider.com/php/code/SmartyValidate/
* @copyright 2001-2005 New Digital Group, Inc.
* @author Monte Ohrt <monte at newdigitalgroup dot com>
* @package SmartyValidate
*/
/**
* test if a value is a valid file type. This only checks the
* file extention, it does not test the actual file type.
*
* @param string $value the value being tested
* @param boolean $empty if field can be empty
* @param array params validate parameter values
* @param array formvars form var values
*/
function smarty_validate_criteria_isFileType($value, $empty, &$params, &$formvars) {
$_field = $params['field'];
$_type = isset($params['field2']) ? $params['field2'] : $params['type'];
if(!isset($_FILES[$_field]))
// nothing in the form
return false;
if($_FILES[$_field]['error'] == 4)
// no file uploaded
return $empty;
if(!preg_match('!\.(\w+)$!i', $_FILES[$_field]['name'], $_match))
// not valid filename
return false;
$_file_ext = $_match[1];
$_types = preg_split('![\s,]+!', $_type, -1, PREG_SPLIT_NO_EMPTY);
foreach($_types as $_key => $_val) {
$_types[$_key] = strtolower($_types[$_key]);
}
if(!in_array(strtolower($_file_ext),$_types))
// not valid file extention
return false;
return true;
}
?>
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