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run code in 200+ php & hhvm versions
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<?php $arr = array('A', 'B', 'C', 'D'); foreach ($arr as &$item) { $item = "E"; } var_dump($arr);
based on 9CWOr
Output for 5.2.1 - 7.2.0
array(4) { [0]=> string(1) "E" [1]=> string(1) "E" [2]=> string(1) "E" [3]=> &string(1) "E" }
Output for 5.0.0 - 5.2.0
array(4) { [0]=> &string(1) "E" [1]=> &string(1) "E" [2]=> &string(1) "E" [3]=> &string(1) "E" }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/950ft on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/950ft on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/950ft on line 5
Process exited with code 255.