Online PHP editor | refs for 7pmA6

<?php $master = array(); $arrColors = array('R', 'B', 'G' ,'Y'); $arrNumbers = array('1', '2', '3', '4'); foreach($arrColors as $color) { foreach($arrNumbers as $num) { $master = array($color => $num); //echo $color.' => '.$num; //echo "\n"; } } print_r($master);