Funtion Definition

In PHPoC, function has to be declared before being called. Meanwhile, PHP can call function before declaring.

Function Arguments

It is not allowed to use the duplicated argument names in a user-defined function.

Returning Values

If there is no returning value, user-defined function returns zero (0) instead of NULL.
Not support for returning by reference.

Variable Functions

Not support for variable functions.

Anonymous functions

Not support for anonymous functions

Internal Functions

PHPoC supports for various internal functions. Refer to a document named PHPoC Internal Functions to know how to use those functions.