3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(string $value = 1) { return $value; } var_dump(foo(null));
Output for 7.0.3 - 7.0.13, 7.1.0
Fatal error: Default value for parameters with a string type can only be string or NULL in /in/S7dNf on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.2
Fatal error: Default value for parameters with a string type hint can only be string or NULL in /in/S7dNf on line 3
Process exited with code 255.
Output for 5.6.0 - 5.6.28
Fatal error: Default value for parameters with a class type hint can only be NULL in /in/S7dNf on line 3
Process exited with code 255.
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169.75 ms | 1399 KiB | 51 Q