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run code in 150+ php & hhvm versions
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<?php function f(array $a) { foreach ($a as &$i) { foreach ($i as $j) { $j++; } } } $v = [[1], [2]]; f($v); var_dump($v);
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [0]=> int(2) } }
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/hchIq on line 11
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/hchIq on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/hchIq 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 T_ARRAY, expecting ')' in /in/hchIq on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/hchIq on line 3
Process exited with code 255.