Online PHP editor | refs for eWhp3

<?php $ranges = explode(',', '221-231,232-242,243-253,254-264,265-275,276-286,287-297,298-308,309-319,320-330,331-341,342-352'); $rackIds = array(); foreach($ranges as $range) { $racks = explode('-', $range); $start = $racks[0]; $end = $racks[1]; for ($i = $start; $i <= $end; $i++) { $rackIds[] = $i; } } echo count($rackIds) . "\n"; echo implode(',', $rackIds);