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PHP Object-Oriented PHP Basics Building the Recipe Separating Methods

Obayanju Damilare
Obayanju Damilare
3,383 Points
Posted by Obayanju Damilare
Obayanju Damilare
3,383 Points

when do we use self ?? thanks for your answer

when and why do we use the self keyword

2 Answers

Mochammad Rezza
Mochammad Rezza
4,778 Points
Mochammad Rezza
Mochammad Rezza
4,778 Points

self used when we using static property and want to access or set current static property.

for example I have Instance class in the following code.

class Instance
{
     private static $_instance;

     public static function getInstance(){

        if(!isset(self::$_instance)){  

           self::$_instance =  new Database;  // set variable $_instance with new object connection

                 }
       }
}
Obayanju Damilare
Obayanju Damilare
3,383 Points
Obayanju Damilare
Obayanju Damilare
3,383 Points

Thanks Rezza, so basically its used to call another static method within a class