- array_column: documentation ( source)
- var_export: documentation ( source)
- max: documentation ( source)
- min: documentation ( source)
<?php
$array = [
['id' => 117, 'name' => 'Networking', 'count' => 16],
['id' => 188, 'name' => 'FTP', 'count' => 23],
['id' => 189, 'name' => 'Internet', 'count' => 48],
];
$counts = array_column($array, 'count');
var_export(['min' => min($counts), 'max' => max($counts)]);