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run code in 150+ php & hhvm versions
Bugs & Features
<?php $one = Array ( 4 => 'bim', 5 => 'pow', 6 => 'foo' ); $two = Array ( 'n' => Array ( 0 => 1 ), 'm' => Array ( 0 => 1, 1 => 2 ), 'l' => Array ( 0 => 1, 1 => 4, 2 => 64 ) ); $result = array(); while((list($oneKey, $oneValue) = each($one)) && (list($twoKey, $twoValue) = each($two))) { $temp = array(); foreach($twoValue as $item) { $temp[] = $twoKey.'-'.$item; } $result[] = $oneValue.' '.join(' , ', $temp); }; $result = join(' ', $result); var_dump($result);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0, 7.0.0 - 7.1.0
string(42) "bim n-1 pow m-1 , m-2 foo l-1 , l-4 , l-64"
Output for hhvm-3.12.0

Process exited with code 137.