You can also look up for these other topics:
Framework
Coding Standards
Boilerplate
CMS
Tool
Security
Hacktoberfest
PHP interface to Ethereum JSON-RPC API. Fully typed Web3 for PHP 7.X
digitaldonkeyA command-line tool that derives bip32 addresses and private keys.
dan-daPHP & Cryptocurrencies Collections. Powered By https://btcschools.net
atlaschiewThis is an experimental trading bot framework written in PHP. It may contain bugs and should not be trusted with much money
HaschekSolutions