XTraverse.php

This bundle makes it dead easy to traverse through nested arrays/objects in PHP.

Installation

Via Composer

composer require phiil/xtraverse

File download

To use all the functions of this package simply download the src/ directory.

Getting started

Traversing paths

Paths are how you specify where you want to traverse to inside the nested object. Let's assume you want to get the title of the Block with ID 1 inside the 'blocks' array.

Our nested object:

$data = [
    'blocks' => [
        [
            'id' => 1,
            'title' => 'First block',
        ],
    ],
];

Now we specify which element we want:

$path = 'blocks[1].title';

Every step is delimited with a dot ('.') - if you want to query for an ID simply append it to the path with closed brackets.

Now let the traversing begin:

use Phiil\XTraverse\Traverser;

$traverser = new Traverser();
$title = $traverser->traverseData($path, $data, traverseArrayLimit: false); // we want a non-array value - pass "false" as the last argument or the service will throw an exception

echo $title;

The above will output the following: First block

Updating a nested value

Updating a value also works with paths:

use Phiil\XTraverse\Traverser;

// We want to update the title of the block we previously traversed to
$updatePath = 'blocks[1].title';

$traverser = new Traverser();
$data = $traverser->update($data, $path, 'New title')->data;

Note: The update method returns an object with the properties path, data & insert. Getting the data property from the object straight away is almost always the best option.

Working with IDs

The traverse service can auto-increment IDs - meaning if you insert a nested object like:

use Phiil\XTraverse\Traverser;

$object = [
    'id' => null,
    'title' => 'Second block',
];
$traverser = new Traverser();
$data = $traverser->update($object, 'blocks.$', $object)->data;

The object inside $data will now have the ID of 2 (First Block: ID 1).

Note: The path.$ syntax can be used if you want to add a block to a non-associative (only numeric keys) array.

Running tests

To run tests run the following commands:

composer install --dev
./vendor/bin/phpunit tests/

Problems? Issues?

Just post them here on Github or contact me via email: philipp@riddle.com. Feel free to contribute!