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run code in 150+ php & hhvm versions
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<?php $array = array(0 => 100, "color" => "red"); $keys = array_keys($array); foreach($keys as $key => $value) { echo $value ; } print_r($keys); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
0colorArray ( [0] => 0 [1] => color )