3v4l.org

run code in 300+ PHP versions simultaneously
<?php $step = 5; $usernumber = 18; $myseries = range(0, 59, $step); $myseries = range(0, 59, 5); foreach($myseries as $num) { echo $num.'<br />'; $check = round($usernumber/$step) * $step; echo "<br>".$check."--"; //if($usernumber is close to $num) { // echo 'Matching number is '.$num; //} }

preferences:
35.62 ms | 402 KiB | 5 Q