Dictionary

A dictionary is a data structure that holds a collection of values with a unique identifier. Each identifier is a integer or a string and may be other types in rarer occasions. The related values may be of any type.

In PHP, a dictionary structure relies often on the array data structure.

<?php

$dictionary = array('a' => 'blue',
                                     'b' => 'pink',
                                     'c' => array('green', 'yellow'),
                                     );

?>