3v4l.org

run code in 300+ PHP versions simultaneously
<?php $line = "\n|\r|\f|\v"; echo json_encode($line); echo PHP_EOL; echo json_encode(preg_replace('/\R/', PHP_EOL, $line));
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
"\n|\r|\f|\u000b" "\n|\n|\n|\n"
preferences:
120.59 ms | 407 KiB | 5 Q