update based on my tests:
1) "curl -X PURGE " works, so no need rely on purge_cache_byurl.php
cache purge wiki:
https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscache:purge
please note "Whitelist source IP to issue PURGE request", so need run PURGE on the...