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run code in 300+ PHP versions simultaneously
<?php class Foo { protected $foo = 'foo'; public function iterate(Foo $thing) { $r = []; foreach ($thing as $prop) { $r[] = $prop; } return $r; } } class Bar extends Foo { protected $bar = 'bar'; } class Baz extends Foo { protected $baz = 'baz'; } var_dump((new Foo)->iterate(new Foo)); var_dump((new Bar)->iterate(new Bar)); var_dump((new Baz)->iterate(new Baz)); var_dump((new Bar)->iterate(new Baz)); var_dump((new Baz)->iterate(new Bar));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> string(3) "foo" } array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" } array(2) { [0]=> string(3) "foo" [1]=> string(3) "baz" } array(2) { [0]=> string(3) "foo" [1]=> string(3) "baz" } array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
array(1) { [0]=> string(3) "foo" } array(2) { [0]=> string(3) "bar" [1]=> string(3) "foo" } array(2) { [0]=> string(3) "baz" [1]=> string(3) "foo" } array(2) { [0]=> string(3) "baz" [1]=> string(3) "foo" } array(2) { [0]=> string(3) "bar" [1]=> string(3) "foo" }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/64eh3 on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/64eh3 on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/64eh3 on line 5
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_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/64eh3 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/64eh3 on line 5
Process exited with code 255.
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