- var_dump: documentation ( source)
- array_column: documentation ( source)
<?php
$array = [
['id' => 10, 'value' => 100, 'name' => 'hoge'],
['id' => 20, 'value' => 200, 'name' => 'fuga'],
['id' => 30, 'value' => 300, 'name' => 'fizz'],
];
var_dump(array_column($array, 'value', 'id'));