- var_dump: documentation ( source)
- array_slice: documentation ( source)
<?php
$arr = array(array ( 69 => 3000 ),
array ( 69 => 6000 ),
array ( 69 => 6000, 70 => 3500 ),
array ( 69 => 6000, 70 => 4500 ));
var_dump(array_slice($arr, -1)); // last item
echo "\n\n";
var_dump(array_slice($arr, -2)); // last two items