Custom Routines (Delphi and PHP Cross Reference Guide)

Delphi is a hybrid language so you can create either class methods (functions and procedures) or you can create global functions and procedures. When a function or procedure is part of a class, it is a class method.

[function/procedure] RoutineName : ReturnType;

As with C++, your custom routine must come before it's first usage or you have to prototype it in the Interface section.

Note: Contrast Delphi with Delphi Prism which is an OOP language (everything is within a class). Both Delphi and Delphi Prism are based on Object Pascal but implement OOP features differently and have some syntax differences too.

procedure SayHello(pName: String);
begin
  ShowMessage('Hello ' + pName);
end;

function Add(p1, p2 : Double): Double;
begin
  Result := p1 + p2;
end;

 Delphi Custom Routines (procedure, function)

PHP uses functions and loosely typed parameters. Function definitions can come before or after their usage so my preference when mixing PHP in with a mostly HTML page is to put the functions after the </html> tag.

function sayHello($pName) {
 echo "Hello " . $pName . "<br>";
}

function add($p1, $p2) {
 return $p1 + $p2;
}

 PHP Custom Function (function)