This documentation seems to be obsolete because I tried the first example and it doesn't convert the objectId to a string.
This seems to be more current documentation but I can't figure out how to get bson to json
http://mongodb.github.io/mongo-php-library/api/source-class-MongoDB.Model.BSONDocument.html#48-57
MongoDB\BSON\Serializable::bsonSerialize
(mongodb >=1.0.0)
MongoDB\BSON\Serializable::bsonSerialize — Provides an array or document to serialize as BSON
Descrição
abstract public MongoDB\BSON\Serializable::bsonSerialize(): array|stdClass|MongoDB\BSON\Document|MongoDB\BSON\PackedArray
Called during serialization of the object to BSON. The method must return an array, stdClass, MongoDB\BSON\Document, or MongoDB\BSON\PackedArray.
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.
Parâmetros
Esta função não possui parâmetros.
Valor Retornado
An array, stdClass, MongoDB\BSON\Document, or MongoDB\BSON\PackedArray to be serialized as a BSON array or document.
Registro de Alterações
| Versão | Descrição |
|---|---|
| PECL mongodb 1.17.0 |
The return type was changed from array|object. Instead of object, the return type now specifies stdClass. Classes that implement this interface must be changed to no longer declare an object return type. As the return type is tentative, a deprecation warning is emitted on PHP 8.1 and newer. In addition to the changes above, the driver now also supports returning instances of MongoDB\BSON\Document and MongoDB\BSON\PackedArray. Please note that any MongoDB\BSON\PackedArray instances returned are silently converted to objects when stored as root documents. They are stored as arrays when used as an embedded field value. |
Exemplos
Exemplo #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(): array
{
return ['_id' => $this->id, 'foo' => 'bar'];
}
}
$bson = MongoDB\BSON\fromPHP(new MyDocument);
echo MongoDB\BSON\toJSON($bson), "\n";
?>O exemplo acima produzirá algo semelhante a:
{ "_id" : { "$oid" : "56cccdcada14d8755a58c591" }, "foo" : "bar" }
Exemplo #2 MongoDB\BSON\Serializable::bsonSerialize() returning a sequential array for root document
<?php
class MyArray implements MongoDB\BSON\Serializable
{
function bsonSerialize(): array
{
return [1, 2, 3];
}
}
$bson = MongoDB\BSON\fromPHP(new MyArray);
echo MongoDB\BSON\toJSON($bson), "\n";
?>O exemplo acima produzirá:
{ "0" : 1, "1" : 2, "2" : 3 }
Exemplo #3 MongoDB\BSON\Serializable::bsonSerialize() returning an associative array for document field
<?php
class MyDocument implements MongoDB\BSON\Serializable
{
function bsonSerialize(): array
{
return ['foo' => 'bar'];
}
}
$value = ['document' => new MyDocument];
$bson = MongoDB\BSON\fromPHP($value);
echo MongoDB\BSON\toJSON($bson), "\n";
?>O exemplo acima produzirá:
{ "document" : { "foo" : "bar" } }
Exemplo #4 MongoDB\BSON\Serializable::bsonSerialize() returning a sequential array for document field
<?php
class MyArray implements MongoDB\BSON\Serializable
{
function bsonSerialize(): array
{
return [1, 2, 3];
}
}
$value = ['array' => new MyArray];
$bson = MongoDB\BSON\fromPHP($value);
echo MongoDB\BSON\toJSON($bson), "\n";
?>O exemplo acima produzirá:
{ "array" : [ 1, 2, 3 ] }
Veja Também
- MongoDB\BSON\Unserializable::bsonUnserialize() - Constructs the object from a BSON array or document
- MongoDB\BSON\Persistable
- Persisting Data
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Anonymous ¶
8 years ago
