3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = '120201M, 121212M-1, 21121212M, 232323M-2, 32323K, 323232K-1'; var_export(str_word_count($string,1));
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
array ( 0 => 'M', 1 => 'M-', 2 => 'M', 3 => 'M-', 4 => 'K', 5 => 'K-', )
preferences:
44.5 ms | 407 KiB | 5 Q