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Example code of gnugat/traversal

Informations about the package traversal

Traversal

A service for hash map (assoc array) traversal.

When dealing with nested associative structures, traversing them can become quite a pain. Mostly because of the amount of isset checking that is necessary.

For example, to access a nested key ['foo']['bar']['baz'], you must do something like this:

Enough already! Traversal provides a better way:

Note: Traversal is a fork of Igor's get-in. which provides support for PHP 5.3.

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Installation

Use Composer to install Traversal in your projects:

composer require gnugat/traversal:~2.0

Usage

Make the functions available by requiring Composer's autoloader:

Get in

Retrieve value from a nested structure using a list of keys:

Non existent keys return null:

You can provide a default value that will be used instead of null:

Update in

Apply a function to the value at a particular location in a nested structure:

You can variadically provide additional arguments for the function:

Assoc in

Set a value at a particular location:

It will also set the value if it does not exist yet:

Inspiration

The naming and implementation is inspired by the get-in, update-in and assoc-in functions from clojure.

All versions of traversal with dependencies

PHP Build Version
Package Version
Requires php Version >=5.3
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