Newbie question

[neilmurray]

Hi, where can I find info on what $this-> does.
Tried checking th ePHP manual but no Joy.

Thanks,

Neil.

 

[kenrbnsn]

That is how you refer to objects in classes. See <

http://www.php.net/manual/en/ref.classobj.php>

Ken

 

[TheQuestioner]

I come from a VB background, so encountered the same problem.

In VB you would create a class like this: -

Public intLength as integer
Public intHeight as integer

public function Area() as integer
   Area=intLength*intHeight  
End function

In VB, if you are within a function of a class and want to reference a class variables within the same class, then you would just invoke the variable name ([tt][blue]Area=intLength*intHeight[/blue][/tt]).

However in PHP, you need to use different syntax: -

var $Length;
var $Height;

function Area() {
  return $this->Length*$this->Height;
}

In PHP syntax, the class level variable will lose its [tt][blue]$[/blue][/tt] and be post-fixed instead by [tt][blue]$this->[/blue][/tt]. This also holds true when referencing any function of a class externally.