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run code in 150+ php & hhvm versions
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<?php $num = array(1, 5, 10); foreach ($num as $value) { $value++; } print_r($num);
based on SljBR
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Array ( [0] => 1 [1] => 5 [2] => 10 )