Calling a derived static method from a method in parent class in PHP

Question

I've the following classes:

<?php
    Abstract Class A{
        public function foo(){
            self::bar();
        }

       Abstract public static function bar($arg);
    }

    Class B extends A{ 
        public static function bar(){
            echo "Class B";      
        }
    }

    Class C extends A{
        public static function bar(){
            echo "Class C";
        }
    }
?>

I need to that the method bar() for the instantiated class be called from foo():

<?php
  $obj1 = new B();
  $obj2 = new C();

  $obj1->foo(); // I expect to get 'Class B'
  $obj2->foo(); // I expect to get 'Class C'
?>

Thanks in advance.

score 0 · Accepted Answer · answered Feb 18 '13 at 04:15

0

You use late static binding for this

Basically in the abstract class you call static::method(). This uses the method of the class that made the call.

Abstract Class A{
    public function foo(){
        // Late static binding
        static::bar();
    }

   abstract public static function bar();
}

answered Feb 18 '13 at 04:15

Galen

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-1 - this example code does violate strict PHP standards and therefore spits notices. – hakre Feb 18 '13 at 07:28
Please see: http://3v4l.org/Ytl4m – hakre Feb 18 '13 at 16:24

Calling a derived static method from a method in parent class in PHP

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