A helper library for serializing MongoDB types to JSON string

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Language: PHP

1.1.0 2013-06-24 05:52 UTC


A small library that JSON encode an Mongo document that contains MongoDB-specific types (e.g. MongoDate).

If you just use json_encode(), you will get some PHP specific results that makes it very difficult to interface with other part of your program. This library attempts to implement the 'strict mode' and also the 'javascript (JSONP) mode' defined in

Installation using Composer

Create a composer.json file in your project root:

    "require": {
        "mtrbean/mongo-json": "1.*"

Install via composer:

php composer.phar install

P.S. If you haven't already been using composer for managing your dependency, you can install it via:

curl -sS | php


You can have the class MongoJson autoloaded using the mechanism provided by composer:

require 'vendor/autoload.php';


Strict Mode

$doc = array("dt" => new MongoDate);
echo MongoJson::strict($doc);

will print:


Extended Mode

$doc = array("dt" => new MongoDate);
echo MongoJson::extended($doc);

will print:

{"dt":new Date(1371525158000)}


You can pass extra options that you can normally use with json_encode()

$doc = array("_id" => new MongoId, "regex" => new MongoRegex('/^acme.*corp/i'));
echo MongoJson::extended($doc, JSON_PRETTY_PRINT); // will prettify the JSON string

will print:

    "_id": {
        "$oid": "51bfcdd71ede01d61a000000"
    "regex": /^acme.*corp/i




Feel free to fork and submit pull requests!