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run code in 150+ php & hhvm versions
Bugs & Features
<?php $sum = 0; $master = array(); $arrColors = array('R', 'B', 'G' ,'Y'); $arrNumbers = array('1', '2', '3', '4'); foreach($arrColors as $num) { foreach($arrNumbers as $color) { $temp = $color.' - '.$num; if ($num != $num) { $sum+= $num; } array_push($master, $temp); } } print_r($master); echo "\n"; print_r ("The sum is ".$sum);
based on 0JXYk
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => 1 - R [1] => 2 - R [2] => 3 - R [3] => 4 - R [4] => 1 - B [5] => 2 - B [6] => 3 - B [7] => 4 - B [8] => 1 - G [9] => 2 - G [10] => 3 - G [11] => 4 - G [12] => 1 - Y [13] => 2 - Y [14] => 3 - Y [15] => 4 - Y ) The sum is 0
Output for hhvm-3.10.0

Process exited with code 153.