- reset: documentation ( source)
<?php
$users = [
"4" => "John",
"7" => "Alex",
"13" => "Smith",
"95" => "Taylor"
];
$id = 3;
$nearestUserByIdInReverseOrder = reset($users);
foreach($users as $userId => $name) {
if($id >= $userId) {
$nearestUserByIdInReverseOrder = $name;
}
}
echo $nearestUserByIdInReverseOrder;