Online PHP editor | refs for rb7bD

<?php $products = [451, 455, 453]; $mod = count($products); $days = null; $weekdays = ["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"]; $flipped = array_flip($weekdays); $callback = function( $e ) use( $mod ) { return ($e % $mod); }; $days = array_map( $callback, array_keys( $weekdays ) ); // listing each weekday's product ID foreach ($flipped as $wday => $dex) { echo "$wday, "; echo $products[ $days[$dex] ], "\n"; } // get current product ID: $now = time(); $today = date("l",$now); $dex = $flipped[ $today ]; echo "\nToday is $today and the current product ID is ", $products[ $days[ $dex ] ];