3v4l.org

run code in 300+ PHP versions simultaneously
<?php $bom = chr(0xef) . chr(0xbb) . chr(0xbf); $str = 'Hello World!'; var_dump($str); echo str_repeat('-', 15).PHP_EOL; var_dump($bom.$str);
Output for 7.1.0 - 7.1.33, 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
string(12) "Hello World!" --------------- string(15) "Hello World!"
preferences:
142.63 ms | 407 KiB | 5 Q