3v4l.org

run code in 500+ PHP versions simultaneously
<?php class C { function __toString(): bool { return 'instance of C'; } }
Output for 8.5.0 - 8.5.3
Fatal error: C::__toString(): Return type must be string when declared in /in/5010J on line 3 Stack trace: #0 {main}
Process exited with code 255.
Output for 8.0.14 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
Fatal error: C::__toString(): Return type must be string when declared in /in/5010J on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.13
Fatal error: Declaration of C::__toString(): bool must be compatible with Stringable::__toString(): string in /in/5010J on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33

preferences:
55.04 ms | 1489 KiB | 3 Q