3v4l.org

run code in 200+ PHP versions simultaneously
<?php trait T { abstract public function test(int $x); } class C { use T; public function test(string $x) {} }
based on TkWRS
Output for 5.4.0 - 7.4.1
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/SeVK3 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/SeVK3 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/SeVK3 on line 3
Process exited with code 255.