Clausure is an utility library for generating common closures useful in array_map(), array_filter() and alike.
No required dependencies, only PHP >=5.3
This library is available in Composer as thunderer/clausure, to install it execute:
composer require thunderer/clausure
or manually update your composer.json with:
(...)
"require": {
"thunderer/clausure": "dev-master"
}
(...)
and run composer install or composer update afterwards.
The whole library consists of one class, Clausure, which has several static methods. It can be used in two ways:
- create necessary closure and pass it into desired function,
- execute desired operation with closure being created inside.
Assume that there is a class Data:
class Data
{
private $id;
private $name;
public function __construct($id, $name)
{
$this->id = $id;
$this->name = $name;
}
public function getId() { return $this->id; }
public function getName() { return $this->name; }
}It can be then processed as shown below:
use Thunder\Clausure\Clausure;
$data0 = new Data('aaa', 123);
$data1 = new Data('xxx', 123);
$data2 = new Data('aaa', 456);
$items = array($data0, $data1, $data2);
// just get closures and pass them to functions:
$onlyAaa = array_filter($items, Clausure::testProperty('name', 'aaa'));
$only123 = array_filter($items, Clausure::testMethod($items, 'getValue'));
$names = array_map(Clausure::getProperty('name'), $items);
$values = array_map(Clausure::callMethod('getValue'), $items);
// execute desired operation with closure created inside:
$onlyAaa = Clausure::filterProperty($items, 'name', 'aaa');
$only123 = Clausure::filterMethodCall($items, 'getValue', 123);
$names = Clausure::mapProperty($items, 'name');
$values = Clausure::mapMethodCall($items, 'getValue');See LICENSE file in the main directory of this library.