3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { public function test() : string { echo "abc"; } } (new a)->test();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
abc Fatal error: Uncaught TypeError: a::test(): Return value must be of type string, none returned in /in/dtuDG:6 Stack trace: #0 /in/dtuDG(9): a->test() #1 {main} thrown in /in/dtuDG on line 6
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
abc Fatal error: Uncaught TypeError: Return value of a::test() must be of the type string, none returned in /in/dtuDG:6 Stack trace: #0 /in/dtuDG(9): a->test() #1 {main} thrown in /in/dtuDG on line 6
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/dtuDG on line 4
Process exited with code 255.

preferences:
226.7 ms | 402 KiB | 341 Q