3v4l.org

run code in 500+ PHP versions simultaneously
<?php $parts = preg_split('~([+*/-])~', '6+4*4+100+444*6*13*14', -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); print_r($parts);

preferences:
84.23 ms | 1580 KiB | 5 Q