3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match('/\B@([\w-\.]+)\b/', 'foo');
Output for 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 - 8.2.25, 8.3.0 - 8.3.13
Warning: preg_match(): Compilation failed: invalid range in character class at offset 7 in /in/mJLK0 on line 3
Output for 7.2.0 - 7.2.33
preferences:
75.56 ms | 407 KiB | 5 Q