Question

I am having trouble figuring out a problem and it is because I don’t know the correct terms to be searching for. Could someone please name all the parts of a PHP function and if I’m missing something please add it.

function my_function(
            non_variable $variable_one,
            $variable_two = "",
            $variable_three ) {

    /* inside stuff (Statement?) */
}

The answer I’m looking for would look something like this

function: declaration
my_function: name
non_variable: Please Answer
$variable_one: variable filled with non_variable

The one I really need to know about are non_variable and $variable_one, Thanks!

---

EDIT: more detail about the function

function my_function(custom_name $company) {
    $website = $company->company_website;
    /* Additional stuff */
}

Answer 1

function foo(         // function declaration with function name
    SomeType $arg1,   // argument with type hint
    $arg2,            // argument
    $arg3 = ''        // argument with default value
) {                   // all above together: function signature
    // function body
}

Arguments may also be called “parameters” pretty much interchangeably.
See:

• http://php.net/manual/en/functions.user-defined.php
• http://php.net/manual/en/functions.arguments.php
• http://php.net/manual/en/language.oop5.typehinting.php