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php-jsonpointer

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JSON Pointer implementation for PHP.

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# JSON Pointer for PHP

![Test](https://github.com/raphaelstolt/php-jsonpointer/workflows/Test/badge.svg) [![Version](http://img.shields.io/packagist/v/php-jsonpointer/php-jsonpointer.svg?style=flat)](https://packagist.org/packages/php-jsonpointer/php-jsonpointer) [![PHP Version](http://img.shields.io/badge/php-8.1+-ff69b4.svg)](https://packagist.org/packages/php-jsonpointer/php-jsonpointer)

This is an implementation of [JSON Pointer](http://tools.ietf.org/html/rfc6901) written in PHP. Triggered by @janl's node.js [implementation](https://github.com/janl/node-jsonpointer) and being a bit bored.

### Installation via Composer

``` bash
composer require php-jsonpointer/php-jsonpointer
```

### Usage

Now you can use JSON Pointer for PHP via the available Composer **autoload file**.
``` php
<?php require_once 'vendor/autoload.php';

use Rs\Json\Pointer;
use Rs\Json\Pointer\InvalidJsonException;
use Rs\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' references a nonexistent value
}
```

### Running tests

``` bash
composer test
```

### License

This library is licensed under the MIT License. Please see [LICENSE](LICENSE.md) for more information.

### Changelog
Please see [CHANGELOG](CHANGELOG.md) for more information.

### Contributing
Please see [CONTRIBUTING](CONTRIBUTING.md) for more information.

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