3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pismena = "ABA"; echo array_filter(count_chars($pismena, 1), function($c) { return $c > 1; })[65];
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2
preferences:
250.02 ms | 404 KiB | 259 Q