You can use MPOS or CK pool code which is public

MPOS - Mining Portal Open Source.

https://github.com/MPOS/php-mpos

CK Pool code

https://bitbucket.org/ckolivas/ckpool

CK Pool code is well tested and used on many pools.
Running pool is not easy and take much work must know security to protect users and server from a hack.

AsicWorld