php 写入日志函数

    public static function log($var, $file = ''){
        $file = LOG_PATH . 'static' . '/' . 'log' . '/' .
        ($file ? $file . '_' : $file) . date('Ymd') . '.log';
        $str = self::encodeObject($var);
        error_log(DTF . ' ' . $str . "\n", 3, $file);
    }
    
    private static function encodeObject($Object){
        $str = '';
        if (is_resource($Object) || is_object($Object)) {
            $str = '** '.(string)$Object.' **';
        } elseif (is_array($Object)) {
            foreach ($Object as $key => $val) {
                $str .= $key . '::::' . self::encodeObject($val) . '\n';
            }
        } else {
            $str = (string)$Object;
        }
        return $str;
    }