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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$arr = [
0 => 1,
1 => 2,
2 => 1,
3 => 2,
4 => 8,
5 => 7,
6 => 6,
7 => 6,
8 => 6,
9 => 5,
10 => 8,
11 => 4,
12 => 1,
13 => 1,
14 => 1,
15 => 1
];
$items = array_slice(array_unique(array_reverse($arr)), 0, 5);
print_r($items);