Please do not add yet another thin wrapper of an underlying C API. PHP is not a drop-in replacement of C. PHP is a much higher-level language. Developers should not have to understand how the underlying library works to be able to use PHP. We need to move away from thin C wrappers as a language. PHP should abstract more, not less, of C code.
The new API doesn't have to have exactly the same names as the C library. Please follow PHP naming conventions and implement OOP-based API.