Small shortand function for reading and encoding JSON in php

json.php

<?php
if (!function_exists('json')) {
	function json ($data) {
		// if string we return as array
		if (is_string($data)) {
			return json_decode($data, true);
		// if array or object we encode it
		} else if (is_array($data) || is_object($data)) {
			return json_encode($data);
		}
	}
}