UnusedForeachValue

The value variable in a foreach loop is assigned but never used in the loop body. This is typically a sign that the variable was accidentally omitted from the logic, or that only the key was needed.

Example

<?php
$items = ['a', 'b', 'c'];
foreach ($items as $key => $value) {
    echo $key; // $value is never used
}

How to fix

If you only need the key, use the single-variable form of foreach:

<?php
foreach ($items as $key) {
    echo $key;
}

If you need the value, make sure to use $value in the loop body.