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run code in 150+ php & hhvm versions
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<?php $value = 1; $week_day = 6; for ($c=1; $c<8; $c++) { if ($week_day == $c) { var_dump(${'day'.$c.'_hours'} = $value); } }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1)