A::missing()

Checks for missing elements in an array

A::missing(array $array, array $required = [ ]): array

Parameters

Name	Type	Default	Description
$arrayrequired	`array`	no default value	The source array
$required	`array`	`[ ]`	An array of required keys

array

An array of missing fields. If this is empty, nothing is missing.

$array = [
  'cat'  => 'miao',
  'dog'  => 'wuff',
  'bird' => 'tweet'
];