<?php
require_once 'src/JsonPointer/JsonPointer.php';

use JsonPointer\JsonPointer;

$json = '{"foo":1,"bar":{"baz":2},"qux":[3,4,5]}';
$jsonPointer = new JsonPointer($json);

$all = $jsonPointer->get("/"); // string('{"foo":1,"bar":{"baz":2},"qux":[3,4,5]}')
$one = $jsonPointer->get("/foo"); // int(1)
$two = $jsonPointer->get("/bar/baz"); // int(2)
$three = $jsonPointer->get("/qux/0"); // int(3)
$five = $jsonPointer->get("/qux/2"); // int(5)
$null = $jsonPointer->get("/qux/7"); // null

$one = $jsonPointer->set("/foo", "something"); // int(1) + json.foo = 'something'
$something = $jsonPointer->get("/foo"); // string('something')
$something = $jsonPointer->set("/foo"); // string('something') + json.foo is unset/removed
$something = $jsonPointer->get("/foo"); // null

$all = $jsonPointer->get("/"); // string('{"bar":{"baz":2},"qux":[3,4,5]}')

{
    "require": {
        "php-jsonpointer/php-jsonpointer": "master-dev"
    }
}

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

use JsonPointer\JsonPointer;

$json = '{"foo":1,"bar":{"baz":2},"qux":[3,4,5]}';
$jsonPointer = new JsonPointer($json);

$all = $jsonPointer->get("/"); // string('{"foo":1,"bar":{"baz":2},"qux":[3,4,5]}')

$ phpunit --configuration phpunit.xml.dist
OK (42 tests, 77 assertions)
$