<?php
$userIds = [1, 2, 3, 4, 5, 8, 2, 39, 298];
$userIdKeys = array_map(function ($index) {
return ":userId_{$index}";
}, range(0, count($userIds) - 1));
$userIds = array_combine($userIdKeys, $userIds);
$userIdKeyString = implode(', ', $userIdKeys);
$sql = "SELECT * FROM user WHERE userId IN ({$userIdKeyString});";
var_dump($sql, $userIds);
preferences:
40.29 ms | 402 KiB | 5 Q