## Why is this an issue?

Calling a function or a method with fewer or more arguments than expected will raise a TypeError. This is usually a bug and should be fixed.

Provide missing arguments to the call, or define default values if there are fewer arguments.

Reduce the number of arguments provided by the function call, or add more parameter if there are more arguments than expected.

### Noncompliant code example

    function myFunction($a, $b, $c = null) {
      //...
    }

    myFunction($a); // Noncompliant - 2 arguments are required

### Exceptions

No issue is reported when arguments are used in the body of the function being called.

    function myFunction() {
      $arg_list = func_get_args();
      //...
    }

    myFunction($a, $b);

## Resources

- CWE - CWE-628 - Function Call with Incorrectly Specified Arguments