3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $master = array(); $arrColors = array('R', 'B', 'G' ,'Y'); $arrNumbers = array('1', '2', '3', '4'); foreach($arrColors as $color) { foreach($arrNumbers as $num) { //$master[$color] = $num; $temp = $color.' => '.$num; array_push($master, $temp); //echo "\n"; } } print_r($master);
based on N2ILF
Output for 4.3.0 - 5.6.21, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => R => 1 [1] => R => 2 [2] => R => 3 [3] => R => 4 [4] => B => 1 [5] => B => 2 [6] => B => 3 [7] => B => 4 [8] => G => 1 [9] => G => 2 [10] => G => 3 [11] => G => 4 [12] => Y => 1 [13] => Y => 2 [14] => Y => 3 [15] => Y => 4 )
Output for hhvm-3.10.0

Process exited with code 153.