Method: a::missing

Checks for missing elements in an array

This is very handy to check for missing
user values in a request for example.

Info

Syntax

a::missing($array, $required=array())

Parameters

• $array (array) The source array
• $required (array) An array of required keys

Return (array)

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

Example

$array = array(
  'cat' => 'miao',
  'dog' => 'wuff',
  'bird' => 'tweet'
);    

$required = array('cat', 'elephant');

$missng = a::missing($array, $required);
// missing: array(
//    'elephant'
// );