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run code in 150+ php & hhvm versions
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<?php function foo(&$array) { foreach ($array as &$value) { $value = 'c'; } } $arr = array('a', 'b'); foo($arr); var_dump($arr);
Output for 5.2.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> string(1) "c" [1]=> string(1) "c" }
Output for 5.0.0 - 5.2.0
array(2) { [0]=> &string(1) "c" [1]=> string(1) "c" }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/gP68Q on line 3
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 '$' in /in/gP68Q on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/gP68Q on line 3
Process exited with code 255.