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run code in 300+ PHP versions simultaneously
<?php foreach (array(array('a', 'b'), array('c', 'd')) as $key => list($a, $b)) { var_dump($key, $a, $b); echo PHP_EOL; }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(0) string(1) "a" string(1) "b" int(1) string(1) "c" string(1) "d"
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected 'list' (T_LIST) in /in/UMKcU on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_LIST in /in/UMKcU on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_LIST, expecting '&' or T_STRING or T_VARIABLE or '$' in /in/UMKcU on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_LIST, expecting '&' or T_STRING or T_VARIABLE or '$' in /in/UMKcU on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_LIST, expecting T_VARIABLE or '$' in /in/UMKcU on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_LIST, expecting T_VARIABLE or '$' in /in/UMKcU on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/UMKcU on line 3
Process exited with code 255.

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