PHP5 static methods inheritance. Overloading. Getting called class name

Question

I have good oop understanding but poor understanding of its implementation in php...

I have the following code, hope it's self documented =).

I need to have BB in the output

class A{
    // I can't copy function::classname() to all my descendant classes

    static function classname(){
        echo __CLASS__;
    }
}

class B extends A{

    static function test(){
        self::classname();
    }

    function test1(){
        self::classname();
    }



    //i have A LOT of static and non-static functions using self::classname() in their code
    // I can't copy all them to base class
    }

    $v = new B();
    B::test();
    $v->test1();

I'm stuck with static:: and self:: syntax

PS: another crazy question I've come across:

Suppose I have

function doSomething(){
    echo $this->id;
}

Sometimes it gets into the static contexts. Yes, I know, that's because my bad application design. But is it possible to create a second(mirror, overloading) function

static function doSomething(){
    echo false;
}

It means that using $obj->doSomething() returns id and using Class::doSomething() returns false

Question 3:

Is it possible to get property default value in static context an property value in non-static context automatically?

xzyfer · Accepted Answer · 2011-02-26 06:35:53Z

5

Have a look at late static binding.

class A {
    static function classname() {
        echo __CLASS__;
    }

    static function test1() {
        static::classname();
    }
}

class B extends A {
    static function classname() { 
        echo __CLASS__;
    }
}

$v = new B();
B::test1();
$v->test1();

Or as pointed out by Long Ears in the comments, assuming php 5.3.0+ you can use get_called_class()

class A {
    static function classname() {
        echo get_called_class();
    }

    // this can be defined in either class A or B without affecting the output
    static function test1() {
        static::classname();
    }
}

class B extends A {
}

$v = new B();
B::test1();
$v->test1();

Outputs:

BB

edited Feb 26, 2011 at 6:35

answered Feb 26, 2011 at 6:12

xzyfer

14.2k5 gold badges37 silver badges46 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Dan Over a year ago

doesn't this example output AA?

xzyfer Over a year ago

My bad, updated the question. You need to use late static binding.

Long Ears Over a year ago

If you want to get the called class in classname() without implementing it again in the child, you can change it from echo __CLASS__; to echo get_called_class(); (Requires PHP >= 5.3.0 like LSB)

Dan Over a year ago

I'm sorry, but that's not what I want. The last edit explains why

Dan Over a year ago

@LongEars Would it be difficult for you to post the entire solution?

Matthew · Accepted Answer · 2011-02-26 06:30:23Z

2

Regarding your second "crazy" question, see the Magic Methods. Basically, you would need to implement something like:

class Foo
{
  public function __call($name, $arguments)
  {
    // call the _$name function
  }

  public static function __callStatic($name, $arguments)
  {
    // call the _{$name}_static function
  }

  private function _bar()
  {
  }

  private static function _bar_static()
  {
  }
}

$foo = new Foo();
$foo->bar();
Foo::bar();

answered Feb 26, 2011 at 6:30

Matthew

48.5k11 gold badges90 silver badges101 bronze badges

Comments

Ayoub Arroub · Accepted Answer · 2014-02-04 20:31:00Z

0

it's possible to add a static method like this

class Foo {   
public static function __callStatic()   {
// ....     
}
}

// in Other file 

// Call the static method   
Foo-->__callStatic()

and call it on an other file (In php ) ?

answered Feb 4, 2014 at 20:31

Ayoub Arroub

5154 silver badges12 bronze badges

Collectives™ on Stack Overflow

PHP5 static methods inheritance. Overloading. Getting called class name

3 Answers 3

5 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

5 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related