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run code in 150+ php & hhvm versions
Bugs & Features
<?php function f($a, &$b, &$c) { echo __FUNCTION__, "\n"; var_dump($a); var_dump($b); var_dump($c); $b++; $c--; } $ref_a = 10; $ref_b = 10; $arr = array('a', &$ref_a, $ref_b); // call_user_func_array('f', $arr); var_dump($arr); f(...$arr); var_dump($arr);
Output for 5.6.7 - 5.6.28, 7.0.0 - 7.1.0
array(3) { [0]=> string(1) "a" [1]=> &int(10) [2]=> int(10) } f string(1) "a" int(10) int(10) array(3) { [0]=> string(1) "a" [1]=> &int(11) [2]=> int(9) }
Output for hhvm-3.10.0 - 3.12.0
array(3) { [0]=> string(1) "a" [1]=> &int(10) [2]=> int(10) } Warning: Parameter 3 to f() expected to be a reference, value given in /in/QhIW0 on line 16 f string(1) "a" int(10) int(10) array(3) { [0]=> string(1) "a" [1]=> &int(11) [2]=> int(10) }
Output for 5.5.24 - 5.5.35
Parse error: syntax error, unexpected '.' in /in/QhIW0 on line 16
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.4.45
Parse error: syntax error, unexpected '.', expecting ')' in /in/QhIW0 on line 16
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 '.', expecting ')' in /in/QhIW0 on line 16
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/QhIW0 on line 16
Process exited with code 255.