submit_sm malformed packet

[join2fly1]

Trying to send sms from this script & getting some error. Provider told me that they're getting malformed packet in wirehark their side.
After online investigation i found that the issue is because of last 00 in PDU created by submit_sm

Please help how to remove last 00 from PDU in this script.

Check these links:
onlinecity/php-smpp#82
https://community.arubanetworks.com/t5/AAA-NAC-Guest-Access-BYOD/Unable-to-send-SMS-while-using-SMPP-as-SMS-gateway/ta-p/290888

[xhit]

Hello, sorry for delay, I think I can fix this, but It's a problem not happens with all providers, so, If you can test it I can upload a test branch.