3v4l.org

run code in 200+ php & hhvm versions
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<?php $arr1 = array('mango' => 20); $arr2 = array('apple' => 10); $arr = $arr1 + $arr2; print_r($arr);
Output for 4.3.0 - 7.2.0
Array ( [mango] => 20 [apple] => 10 )