mongoexport 导出的实例

参考文档    

mongoexport   https://docs.mongodb.com/manual/reference/program/mongoexport/index.html

    function checkDir($dir_name)
    {
        if (!file_exists($dir_name) || !is_dir($dir_name)) {
            @mkdir($dir_name, 0777, true);
        }
    }

    // check dir
    checkDir('mongo_collect1');
    checkDir('mongo_collect2');
    checkDir('mongo_collect3');
    checkDir('mongo_collect4');

    // dump collect1
    $config = [
        'tid' => 'you tid',
        'host' => 'your host',
        'limit' => 2000
    ];

    $dump_collect1 =<<mongoexport --host {$config['host']} -d crs -c collect1 -q '{"status":0, "tid":"{$config['tid']}"}' --sort '{_id: -1}' --limit {$config['limit']} --out mongo_collect1/collect1.json
EOF;

    // exec
    exec($dump_collect1);

    // dump data
    $file_name = 'mongo_collect1/collect1.json';
    $collect1_json = file_get_contents($file_name);

    // explode by PHP_EOL
    $collect1_arr = explode(PHP_EOL, $collect1_json);

    echo 'begin 导出数据' . PHP_EOL;

    $user_tel_list = [];
    foreach ($collect1_arr as $sid_json) {

        // get sid tel
        $sid_arr = json_decode($sid_json, true);
        $sid = $sid_arr['sid'];
        $tel = $sid_arr['tel'];

        // export collect2
        $dump_collect2 =<<mongoexport --host {$config['host']} -d crs -c collect2 -q '{"sid":"$sid"}' --out mongo_collect2/$sid.json
EOF;
        exec($dump_collect2);

        // export collect3
        $dump_collect3 =<<mongoexport --host {$config['host']} -d crs -c collect3 -q '{"sid":"$sid"}' --out mongo_collect3/$sid.json
EOF;

        exec($dump_collect3);

        // export collect4
        if (in_array($tel, $user_tel_list)) {
            continue;
        }

        $user_tel_list[] = $tel;
        $dump_collect4 =<<mongoexport --host {$config['host']} -d crs -c collect4 -q '{"tel":"$tel"}' --out mongo_collect4/$tel.json
EOF;

        exec($dump_collect4);

    }

    echo 'end 导出数据' . PHP_EOL;