Question

Possible Duplicate:
How to build multi oop functions in PHP5

Hey,

I’ve seen this kind of code in a couple of forum systems but I can’t find any examples like this:

$this->function()->anotherfunction();

You can see a similar example in PDO:

$pdo->query($sqlQuery)->fetch();

I don’t know how this type of coding is called in PHP and thus I can’t get on looking for any tutorials and examples.

Answer 1

This is called method chaining. An example would be the following. Notice we are returning the current object.

class Example
{
   function test1($var)
   {
      return $this;
   }
   function test2($var)
   {
      return $this;
   }
}

$obj = new Example();
$obj->test1('Var')->test2(543)->test1(true);