JSON Pointer for PHP

This is an implementation of JSON Pointer written in PHP. Triggered by @janl's node.js implementation and being a bit bored.

Installation via Composer

$ composer require softinvest/php-jsonpointer

Usage

Now you can use JSON Pointer for PHP via the available Composer autoload file.

<?php require_once 'vendor/autoload.php';

use SoftInvest\Json\Pointer;
use SoftInvest\Json\Pointer\InvalidJsonException;
use SoftInvest\Json\Pointer\NonexistentValueReferencedException;

$invalidJson = '{"Missing colon" null}';

try {
    $jsonPointer = new Pointer($invalidJson);
} catch (InvalidJsonException $e) {
    $message = $e->getMessage(); // Cannot operate on invalid Json. Message: Parse error on line 1: ...
}

$json = '{"foo":1,"bar":{"baz":2},"qux":[3,4,5],"m~n":8,"a/b":0,"e^f":3}';
$jsonPointer = new Pointer($json);

try {
    $all = $jsonPointer->get(""); // string('{"foo":1,"bar":{"baz":2},"qux":[3,4,5],"m~n":8,"a/b":0,"e^f":3}')
    $one = $jsonPointer->get("/foo"); // int(1)
    $two = $jsonPointer->get("/bar/baz"); // int(2)
    $three = $jsonPointer->get("/qux/0"); // int(3)
    $four = $jsonPointer->get("/qux/1"); // int(4)
    $five = $jsonPointer->get("/qux/-"); // int(5)
    $five = $jsonPointer->get("/qux/" . Pointer::LAST_ARRAY_ELEMENT_CHAR); // int(5)
    $zero = $jsonPointer->get("/a~1b"); // int(0)
    $eight = $jsonPointer->get("/m~0n"); // int(8)
    $three = $jsonPointer->get("/e^f"); // int(3)
    $nonexistent = $jsonPointer->get("/qux/7");
} catch (NonexistentValueReferencedException $e) {
    $message = $e->getMessage(); // Json Pointer '/qux/7' reference a nonexistent value
}

Running tests

$ composer test

License

This library is licensed under the MIT License. Please see LICENSE for more information.

Changelog

Please see CHANGELOG for more information.

Contributing

Please see CONTRIBUTING for more information.