3v4l.org

run code in 500+ PHP versions simultaneously
<?php if(preg_match("\_xyz_", "xyz")) { echo "match"; } else { echo "NOPE"; }
Output for 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL byte in /in/QLtH0 on line 2 NOPE
Output for 8.2.31 - 8.2.33, 8.3.0 - 8.3.33
Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL in /in/QLtH0 on line 2 NOPE
preferences:
50.33 ms | 786 KiB | 4 Q