问PHP和MongoDB极其缓慢(15秒)

EN

    $time_start = microtime(true);
    // connect
    $m = new Mongo();

    // select a database
    $db = $m->comedy;

    // select a collection (analogous to a relational database's table)
    $collection = $db->cartoons;

    // add a record
    $obj = array( "title" => "Calvin and Hobbes", "author" => "Bill Watterson" );
    $collection->insert($obj);

    // add another record, with a different "shape"
    $obj = array( "title" => "XKCD", "online" => true );
    $collection->insert($obj);

    // find everything in the collection
    $cursor = $collection->find();

    // iterate through the results
    foreach ($cursor as $obj) {
        echo $obj["title"] . "\n";
    }
    $time_end = microtime(true);
    $time = $time_end - $time_start;

    echo "\nOperation took $time seconds\n";

Calvin and Hobbes XKCD Operation took 15.000731945038 seconds