Text_Diff::_getTempDir(): string

228    static function _getTempDir()229    {230        $tmp_locations = array('/tmp', '/var/tmp', 'c:\WUTemp', 'c:\temp',231                               'c:\windows\temp', 'c:\winnt\temp');232 233        /* Try PHP's upload_tmp_dir directive. */234        $tmp = ini_get('upload_tmp_dir');235 236        /* Otherwise, try to determine the TMPDIR environment variable. */237        if (!strlen($tmp)) {238            $tmp = getenv('TMPDIR');239        }240 241        /* If we still cannot determine a value, then cycle through a list of242         * preset possibilities. */243        while (!strlen($tmp) && count($tmp_locations)) {244            $tmp_check = array_shift($tmp_locations);245            if (@is_dir($tmp_check)) {246                $tmp = $tmp_check;247            }248        }249 250        /* If it is still empty, we have failed, so return false; otherwise251         * return the directory determined. */252        return strlen($tmp) ? $tmp : false;253    }