3v4l.org

run code in 300+ PHP versions simultaneously
<?php function readonly() { } $var = readonly /* comment */ ();
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Output for 8.1.0 - 8.1.33
Parse error: syntax error, unexpected token "readonly" in /in/XO1KN on line 8
Process exited with code 255.
preferences:
104.93 ms | 407 KiB | 5 Q