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<?php class Foo { public function __construct( private readonly int $a, private readonly string $b, ) { } public function withA(int $a): self { return new self(...(get_defined_vars() + get_object_vars($this))); } public function withB(string $b): self { return new self(...(get_defined_vars() + get_object_vars($this))); } } $f = (new Foo(1, "foo")) ->withA(2) ->withB("bar"); var_dump($f);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.7
object(Foo)#1 (2) { ["a":"Foo":private]=> int(2) ["b":"Foo":private]=> string(3) "bar" }
Output for 8.0.0 - 8.0.30
Parse error: syntax error, unexpected identifier "int", expecting variable in /in/XhG90 on line 6
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting variable (T_VARIABLE) in /in/XhG90 on line 6
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting '&' or variable (T_VARIABLE) in /in/XhG90 on line 6
Process exited with code 255.
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 T_PRIVATE, expecting '&' or T_VARIABLE in /in/XhG90 on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PRIVATE, expecting '&' or T_VARIABLE in /in/XhG90 on line 6
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/XhG90 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/XhG90 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/XhG90 on line 5
Process exited with code 255.
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