[PHP] OOP variables

[Jarratt Ingram]

Hello, 

I was wondering if somebody would mind explaining this to me, is there a
big difference or requirement to pre defining variables your going to
use in a class eg: 

class name {
        $var1 = '';
        $var2 = '';
        
        function blah(){
                $var2....
        }
   }//-- End class  

Or is this also right 

class name {

        function name(){
        
          $this->var1 = '';     
          $this->var2 = '';
                }       
        function blah(){
                ....
                }
        }//-- End class


Thanks 
Jarratt

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