3v4l.org

run code in 500+ PHP versions simultaneously
<?php class A{ public function a(?a|b $x) { } }
Output for 8.0.0 - 8.0.13, 8.1.0 - 8.1.24, 8.3.5
Parse error: syntax error, unexpected token "|", expecting variable in /in/mI6JY on line 4
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.26
Parse error: syntax error, unexpected '|', expecting variable (T_VARIABLE) in /in/mI6JY on line 4
Process exited with code 255.
preferences:
51.47 ms | 806 KiB | 3 Q