- var_dump: documentation ( source)
- json_encode: documentation ( source)
<?php
$array = new SplFixedArray(5);
$array[] = 'boo';
$array[] = 'baz';
$array[] = 'bing';
$array[] = 'foo';
$array[] = 'blah';
var_dump($array);
var_dump(json_encode($array));