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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'foo'; $b = 'bar'; $array = [&$a, $b]; var_dump($array); //$newArray = array_map(function($item){ return $item; }, $array); foreach ($array as $item) { $newArray[] = &$item; } var_dump($newArray);
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> &string(3) "foo" [1]=> string(3) "bar" } array(2) { [0]=> &string(3) "bar" [1]=> &string(3) "bar" }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Y3RuJ on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/Y3RuJ on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Y3RuJ on line 5
Process exited with code 255.