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[How-To]Object Programming in PHP

by Ziki 27 Mar 2007

Object Oriented Programming is the neat little thing you can see everywhere in vBulletin code using the syntax $vbulletin->function.It is basically a variable that contains functions or any code you like.

So the base of an object is to create the class which looks something like this:

Code:

class nameofclass {
//my first class was created
}

Ok we now created a class which will hold the prefix of all functions so now we want to try adding a simple function,for instance:

Code:

class nameofclass {
function plus ($x, $y)
{
$this->plus = $x + $y;
return $this->plus;
}
}

So now we created a function inside.Notice $this which will be later replaced by the name of the class.

But when you would try to echo it it would give you an error that the function is a non-object.For that we have to construct the actual object:

Code:

class nameofclass {
function plus ($x, $y)
{
$this->plus = $x + $y;
return $this->plus;
}
}
$nameofclass = new nameofclass();

new indicates that we created a new object.So now we can use $nameofclass->plus(2, 9) which will output 11.Of course you can insert more functions.

This was a very short introduction to OOP.

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