3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X {} function test(int $number):X { return null; } echo test(123);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: test(): Return value must be of type X, null returned in /in/8m8QG:5 Stack trace: #0 /in/8m8QG(8): test(123) #1 {main} thrown in /in/8m8QG on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Return value of test() must be an instance of X, null returned in /in/8m8QG:5 Stack trace: #0 /in/8m8QG(8): test(123) #1 {main} thrown in /in/8m8QG on line 5
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/8m8QG on line 4
Process exited with code 255.

preferences:
237.94 ms | 402 KiB | 330 Q