ulrichsg / php-collections
Collection classes for PHP 5.3
Requires
- php: >=5.3.0
Requires (Dev)
- phpunit/phpunit: 3.7.*
This package is not auto-updated.
Last update: 2024-12-02 14:10:27 UTC
README
PHP's arrays are a jack-of-all-trades data structure - highly flexible, but there are numerous use cases where I would rather have more specific functionality like the one offered by Java's Collection API. Since PHP 5, the Standard PHP Library offers classes that cover some of these cases, but not nearly all. This project is an attempt to add more.
What? Why?
Imagine the following bit of code that aggregates values, indexed by type:
$totals = array(); foreach ($items as $item) { if (!isset($totals[$item->type])) { $totals[$item->type] = 0; } $totals[$item->type] += $item->value; }
The if (!isset(...))
block makes this piece of code rather ugly, but it is necessary to avoid even uglier warnings.
Using the NumberMap
class from this package we can avoid it and just write:
$totals = new NumberMap(); foreach ($items as $item) { $totals->add($item->type, $item->value); }
Collection types
So far the package only provides two collection types:
Map
- basic key-value mapNumberMap
- a map that can do some math on its entries (see the example above)
I'd love to have more, so send me your ideas - or your pull requests :)
Common features
For maximum convenience, all classes in this package implement the following interfaces:
- ArrayAccess - square-bracket syntax
- IteratorAggregate - foreach loops
- Countable - count() support
Installation
- As a project dependency: Just add
ulrichsg/php-collections
to your composer.json. - Stand-alone for hacking: Clone this repository and run
make
to see a few handy commands.
API documentation
Go here for PHPDoc-generated documentation.
License
This package is released under the MIT license.