3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mystring = '+421917982116'; $findme = 'a'; $pos = strpos($mystring, $findme); var_dump($pos);
Output for 7.1.4, 7.3.24 - 7.3.33, 7.4.12 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
bool(false)

preferences:
106.62 ms | 403 KiB | 120 Q