$sum = $end;
            $file_name = "/home/pzr/download/2016-05-04-audio/{$start}-{$end}";
            $this->logger("start ", $file_name);
            $data = $this->read_file_json($file_name);
            $this->read_json($data);
            $this->write_url_json($start, $end);
            $this->logger('ended ', $file_name);
        }
    }
    public function logger($key, $value, $line = false)
    {
        @error_log("\n {$key} : " . $value, 3, '/tmp/tourism.log');
        if ($line) {
            @error_log("\n------------------------------------------------------\n", 3, '/tmp/tourism.log');
        }
    }
    public function write_url_json($start, $end)
    {
        $imgPath = $this->imgPath . "img{$start}-{$end}.json";
        $mp3Path = $this->mp3Path . "mp3{$start}-{$end}.json";
        $this->logger("{$start}-{$end} :", count($this->picArray));
        $this->logger("{$start}-{$end} :", count($this->mp3Array));
        file_put_contents($imgPath, json_encode($this->picArray));
        file_put_contents($mp3Path, json_encode($this->mp3Array));
    }
}
$mp3Path = '/home/pzr/download/2016-05-08/';
$imgPath = '/home/pzr/download/2016-05-08/';
$tourism = new tourism($mp3Path, $imgPath);
$tourism->start();