/**
* Create and return an instance
*
* @param string $language
*
* @return PMF_String_Basic
*/
public static function getInstance($encoding = null, $language = 'en')
{
if (!self::$instance) {
self::$instance = new self();
self::$instance->encoding = self::DEFAULT_ENCODING;
self::$instance->language = PMF_Language::isASupportedLanguage($language) ? $language : self::DEFAULT_LANGUAGE;
}
return self::$instance;
}
/**
* Clean up a filename: if anything goes wrong, an empty string will be returned
*
* @param string $filename Filename
*
* @return string
*/
private static function _basicFilenameClean($filename)
{
global $denyUploadExts;
// Remove the magic quotes if enabled
$filename = ini_get('magic_quotes_gpc') ? stripslashes($filename) : $filename;
$path_parts = pathinfo($filename);
// We need a filename without any path info
if ($path_parts['basename'] !== $filename) {
return '';
}
// We need a filename with at least 1 chars plus the optional extension
if (isset($path_parts['extension']) && $path_parts['basename'] == '.' . $path_parts['extension']) {
return '';
}
if (!isset($path_parts['extension']) && PMF_String_Basic::strlen($path_parts['basename']) == 0) {
return '';
}
// Deny some extensions (see inc/constants.php), if any
if (!isset($path_parts['extension'])) {
$path_parts['extension'] = '';
}
if (count($denyUploadExts) > 0) {
if (in_array(strtolower($path_parts['extension']), $denyUploadExts)) {
return '';
}
}
// Clean the file to remove some chars depending on the server OS
// 0. main/rfc1867.c: rfc1867_post_handler removes any char before the last occurence of \/
// 1. Besides \/ on Windows: :*?"<>|
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
$reservedChars = array(':', '*', '?', '"', '<', '>', "'", '|');
$filename = str_replace($reservedChars, '_', $filename);
}
return $filename;
}
/**
* Check if the string is a unicode string
*
* @param string $str String
*
* @return boolean
*/
public static function isUTF8($str)
{
return PMF_String_Basic::isUTF8($str);
}
