MongoDB Workshop PHP implementation

<?php
$server = 'mongodb://localhost:27017';
$dbName = 'pizza_shack';
$collName = 'client';


$mongo = new \Mongo($server);

$db = $mongo->selectDb($dbName);

$collection = $db->selectCollection($collName);

//Insert
$collection->insert(array(
    'name' => 'Tânia Soares',
    'gender' => 'F',
    'age' => 50,
    'score' => 1
));
$collection->insert(array(
    'name'   => 'José Dias',
    'gender' => 'M',
    'age'    => 80,
    'score'  => 7,
    'pizzas_preferred' => array(
        array(
            'name' => 'Diavola',
            'score' => 8
        ), array(
            'name' => 'American',
            'score' => 5
        )
    )
));
$collection->insert(array(
    'name'   => 'Maria Lopes',
    'gender' => 'F',
    'age'    => 40,
    'score'  => 9,
    'stats'  => array(
        'last_pizza_eaten' => 'Carbonara',
        'when' => new DateTime('2012-06-25 12:52:00')
    )
));
$collection->insert(array(
    'name'   => 'Paulo José',
    'gender' => 'M',
    'age'    => 15,
    'score'  => 10,
    'pizzas_preferred' => array(
        array(
            'name'  => 'Carbonara',
            'score' => 10
        ), array(
            'name'  => 'All Seasons',
            'score' => 6
        )
    ),
    'stats' => array(
        'last_pizza_eaten' => 'American',
        'when' => new DateTime('2012-11-15 01:35:00')
    )
));
$collection->insert(array(
    'name'   => 'Joana Trindade',
    'gender' => 'F',
    'age'    => 34,
    'score'  => 10,
    'pizzas_preferred' => array(
        array(
            'name'  => 'Diavola',
            'score' => 6
        ), array(
            'name'  =>'Carbonara',
            'score' =>9
        )
    )
));
$collection->insert(array(
    'name'   => 'João Silva',
    'gender' => 'M',
    'age'    => 38,
    'score'  => 5,
    'stats'  => array(
        'last_pizza_eaten' => 'Cheese Ham',
        'when' => new DateTime('2013-01-02 13:20:00')
    )
));
$collection->insert(array(
    'name'   => 'Cristina Moreira',
    'gender' => 'F',
    'age'    => 70,
    'score'  => 4,
    'pizzas_preferred' => array(
        array(
            'name'  => 'Carbonara',
            'score' => 8
        ), array(
            'name'  => 'Cheese Ham',
            'score' => 5
        ), array(
            'name'  => 'American',
            'score' => 9
        )
    )
));
$collection->insert(array(
    'name'   => 'Jorge Martins',
    'gender' => 'M',
    'age'    => 55,
    'score'  => 10,
    'pizzas_preferred' => array(
        array(
            'name'  => 'Carbonara',
            'score' => 10
        ), array(
            'name'  => 'Cheese Ham',
            'score' => 8
        )
    ),
    'stats' => array(
        'last_pizza_eaten' => 'Cheese Ham',
        'when' =>  new DateTime('2011-06-30 20:23:00')
    )
));

//Query
$result = $collection->find(array(
    'stats.last_pizza_eaten' => array('$exists' => true)
));
$result = $collection->find(array(
    'age' => array('$gt' => 30, '$lt' => 100)
));
$result = $collection->find(array(
    'age' => array(38, 55)
));
$result = $collection->find(array(
    '$or' => array(
        array('age' => array('$gt' => 40)),
        array('score' => array('$gt' => 8))
    )
));
$result = $collection->find(array(
    'gender' => array('$ne' => 'F'),
    '$or' => array(
        array('age' => array('$gt' => 40)),
        array('score' => array('$gt' => 8))
    )
));
$result = $collection->find(array(
    'name' => new MongoRegex('/^José/')
));
$result = $collection->find(array(
    'pizzas_preferred.name' => array(
        '$in' => array(new MongoRegex('/diavola/i'))
     )
));
$result = $collection->find(array(
    'stats.last_pizza_eaten' => array(
        new MongoRegex('/carbonara/i')
    )
));
/* Needs a real id to be used
$result = $collection->find(array(
    '_id' => new MongoId('<DOCUMENT_ID>')
));
$result = $collection->find(array(
    '_id' => new MongoId('<DOCUMENT_ID>')
), array(
    'name' => 1
));
*/

$result = $collection->find(array(
    'name' => new MongoRegex('/José/')
));
$result = $collection->find(array(
    'pizzas_preferred.name' => 'Diavola'
));
$result = $collection->find(array(
    'stats.last_pizza_eaten' => new MongoRegex('/carbonara/i'),
    'stats.when' => array('$lte' => new DateTime())
));
$result->sort(array('stats.when' => -1))->limit(1);
$result = $collection->find(array(
    'age' => array('$gt' => 50),
    'stats.last_pizza_eaten' => array('$exists' => true)
));
$result = $collection->find(array(
    'score' => array('$lte' => 5)
));
$result = $collection->find(array(
    'pizzas_preferred' => array('$exists' => true, '$ne' => array())
));
$result = $collection->find(array(
    'age' => array('$in' => array(80, 70))
));

$result->count(); //Total cursor document count
$result->skip(2); //Skip the 2 first documents
$result->limit(3); //Show only 2 documents
$result->skip(2)->count(true); //Gives the total document count taking into account the skip value


//Update
$collection->update(array(
    'name' => 'José Dias'
), array(
    'age' => 85
));

$collection->update(array(
    'name' => array('$exists' => false)
), array(
    'name' => 'José Dias',
    'gender' => 'M',
    'age' => 80,
    'score' => 7,
    'pizzas_preferred' => array(
        array(
            'name' => 'Diavola',
            'score' => 8
        ), array(
            'name' => 'American',
            'score' => 5
        )
    )
));
$collection->update(array(
    'name' => 'José Dias'
), array(
    'age' => array('$set' => 85)
));
$collection->update(array(
    'pizzas_preferred' => array('$exists' => true)
), array(
    '$inc' => array('score' => 1)
), array(
    'multiple' => true
));
$collection->update(array(
    'pizzas_preferred.score' => array('$gt' => 8)
), array(
    '$set' => array('prize_winner' => true)
), array(
    'multiple' => true
));
$collection->update(array(
    '$or' => array(
        array('name' => 'José Dias'),
        array('pizzas_preferred .score' => array('$gt' => 8))
    )
), array(
    '$set' => array('prize_winner' => true)
), array(
    'multiple' => true
));
/*
$collection->update(array(
    '_id' => new MongoId('<DOCUMENT_ID>')
), array(
    '$unset' => array('pizzas_preferred' => true),
    '$inc' => array('score' => -1)
));
*/
$collection->update(array(
    'pizzas_preferred.name' => 'Diavola'
), array(
    '$unset' => array('pizzas_preferred' => true)
), array(
    'multiple' => true
));
$collection->update(array(), array(
    '$push' => array(
        'pizzas_preferred' => array(
            'name' => '4 Cheese',
            'score' => 10
        )
    )
));
$collection->update(array(
    'name' => 'Paulo José',
    'pizzas_preferred.name' => 'Carbonara'
), array(
    '$set' => array(
        'pizzas_preferred.$.score' => 5
    )
));
$collection->update(array(
    'prize_winner' => array('$exists' => true)
), array(
    '$unset' => array('prize_winner' => true)
));
$collection->update(array(
    'name' => 'Tânia Soares'
), array(
    '$set' => array(
        'stats' => array(
            'last_pizza_eaten' => 'Carbonara',
            'when' => new DateTime('2013-01-10 18:00:00')
        )
    )
));

//Remove
$collection->remove(array(
    'stats.last_pizza_eaten' => array(
        '$exists' => false
    )
));