Fix PHP 8.4 (Implicitly marking parameter)

change resource key type from resource to mixed to support both resou…

…rce and OpenSSLAsymmetricKey

bring the realpath back (#22)

* bring the realpath back

* fix return type

* add cs fixer cache

* run cs fixer

Update README.md

Update README.md

add logo and update banner

Update README.md

Update README.md

Support other operating systems

Update README.md