PHP Manual
MongoDB\BSON\Serializable
Provides an array or document to serialize as BSON

MongoDB\BSON\Serializable::bsonSerialize

(mongodb >=1.0.0)

MongoDB\BSON\Serializable::bsonSerialize — Provides an array or document to serialize as BSON

Beschreibung

abstract public MongoDB\BSON\Serializable::bsonSerialize(): array|object

Called during serialization of the object to BSON. The method must return an array or stdClass.

Root documents (e.g. a MongoDB\BSON\Serializable passed to MongoDB\BSON\fromPHP()) will always be serialized as a BSON document. For field values, associative arrays and stdClass instances will be serialized as a BSON document and sequential arrays (i.e. sequential, numeric indexes starting at 0) will be serialized as a BSON array.

Users are encouraged to include an _id property (e.g. a MongoDB\BSON\ObjectId initialized in your constructor) when returning data for a BSON root document; otherwise, the driver or database will need to generate a MongoDB\BSON\ObjectId when inserting or upserting the document, respectively.

Parameter-Liste

Diese Funktion besitzt keine Parameter.

Rückgabewerte

An array or stdClass to be serialized as a BSON array or document.

Beispiele

Beispiel #1 MongoDB\BSON\Serializable::bsonSerialize() returning an associative array for root document


<?php

class MyDocument implements MongoDB\BSON\Serializable
{
    private $id;

    function __construct()
    {
        $this->id = new MongoDB\BSON\ObjectId;
    }

    function bsonSerialize()
    {
        return ['_id' => $this->id, 'foo' => 'bar'];
    }
}

$bson = MongoDB\BSON\fromPHP(new MyDocument);
echo MongoDB\BSON\toJSON($bson), "\n";

?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

{ "_id" : { "$oid" : "56cccdcada14d8755a58c591" }, "foo" : "bar" }

Beispiel #2 MongoDB\BSON\Serializable::bsonSerialize() returning a sequential array for root document


<?php

class MyArray implements MongoDB\BSON\Serializable
{
    function bsonSerialize()
    {
        return [1, 2, 3];
    }
}

$bson = MongoDB\BSON\fromPHP(new MyArray);
echo MongoDB\BSON\toJSON($bson), "\n";

?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

{ "0" : 1, "1" : 2, "2" : 3 }

Beispiel #3 MongoDB\BSON\Serializable::bsonSerialize() returning an associative array for document field


<?php

class MyDocument implements MongoDB\BSON\Serializable
{
    function bsonSerialize()
    {
        return ['foo' => 'bar'];
    }
}

$value = ['document' => new MyDocument];
$bson = MongoDB\BSON\fromPHP($value);
echo MongoDB\BSON\toJSON($bson), "\n";

?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

{ "document" : { "foo" : "bar" } }

Beispiel #4 MongoDB\BSON\Serializable::bsonSerialize() returning a sequential array for document field


<?php

class MyArray implements MongoDB\BSON\Serializable
{
    function bsonSerialize()
    {
        return [1, 2, 3];
    }
}

$value = ['array' => new MyArray];
$bson = MongoDB\BSON\fromPHP($value);
echo MongoDB\BSON\toJSON($bson), "\n";

?>