3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo _();
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.30, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
Fatal error: Uncaught Error: Call to undefined function _() in /in/8dgji:3 Stack trace: #0 {main} thrown in /in/8dgji on line 3
Process exited with code 255.
Output for 5.6.38 - 5.6.40
Fatal error: Call to undefined function _() in /in/8dgji on line 3
Process exited with code 255.

preferences:
84.24 ms | 407 KiB | 5 Q