v1o/php-liquid — comment on commit 566a3be467bf7aa32e3219b2f516d2eee0dedfe8
File:  line 0
By harrydeluxe:

I've pushed a change ready. You can use your own Tags, but must register it with $liquid->registerTag('tagname', 'LiquidTagTagname')
Important is the prefix 'LiquidTag' followed by the tagname.