Lodash-PHP example functions

filter.php

<?php

use function _\filter;

$users = [
    [ 'user' => 'barney', 'age' => 36, 'active' => true],
    [ 'user' => 'fred',   'age' => 40, 'active' => false]
];

filter($users, 'active');

// => [[ 'user' => 'barney', 'age' => 36, 'active' => true]]

class User
{
  private $name;
  private $active;

  public function __construct(string $name, bool $active)
  {
    $this->name = $name;
    $this->active = $active; 
  }
  
  public function isActive(): bool
  {
    return $this->active;
  }
}

$users = [
  new User('Barney', true),
  new User('Fred', false),
];

filter($users, 'active');

/* =>
[
  class User#219 (2) {
    private $name => string(6) "Barney"
    private $active => bool(true)
  }
]
*.

orderBy.php

<?php

use function _\orderBy;

$users = [
    ['user' => 'fred',   'age' => 48],
    ['user' => 'barney', 'age' => 34],
    ['user' => 'fred',   'age' => 40],
    ['user' => 'barney', 'age' => 36]
];

// Sort by `user` in ascending order and by `age` in descending order.
orderBy($users, ['user', 'age'], ['asc', 'desc'])
  
// => [['user' => 'barney', 'age' => 36], ['user' => 'barney', 'age' => 34], ['user' => 'fred', 'age' => 48], ['user' => 'fred', 'age' => 40]]

partition.php

<?php

use function _\partition;

$users = [
    ['user' => 'barney',  'age' => 36, 'active' => false],
    ['user' => 'fred',    'age' => 40, 'active' => true],
    ['user' => 'pebbles', 'age' => 1,  'active' => false]
];
 
partition($users, function($user) { return $user['active']; })
  
/*
=>
[
  [
    ['user' => 'fred', 'age' => 40, 'active' => true]
  ],
  [
    ['user' => 'barney',  'age' => 36, 'active' => false],
    ['user' => 'pebbles', 'age' => 1,  'active' => false]
  ]
]
*/