3v4l.org

run code in 300+ PHP versions simultaneously
<?php $♫ = "music"; var_dump( $♫ ); // string(5) "music" $len = 0; $string = "♫"; var_dump($len = mb_strlen("♫", '8bit')); echo mb_substr($string, 0, $len);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
string(5) "music" int(3) ♫
preferences:
285.4 ms | 406 KiB | 330 Q