PHP News (Sort Closure)

May 3, 2019

Link to the original site [https://stitcher.io/blog/short-closures-in-php]

PHP 7.4 Short Closure

Short closures, also called arrow functions, are a way of writing shorter functions in PHP. This notation is useful when passing closures to functions like

array_map 

or

array_filter.

Current usage

// A collection of Post objects
$posts = [/* … */];

$ids = array_map(fn($post) => $post->id, $posts);

Before

$ids = array_map(function ($post) {
    return $post->id;
}, $posts);