get_class

(PHP 4, PHP 5, PHP 7)

get_classReturns the name of the class of an object

Descrierea

get_class ([ object $object ] ) : string

Gets the name of the class of the given object.

Parametri

object

The tested object. This parameter may be omitted when inside a class.

Notă: Explicitly passing NULL as the object is no longer allowed as of PHP 7.2.0. The parameter is still optional and calling get_class() without a parameter from inside a class will work, but passing NULL now emits an E_WARNING notice.

Valorile întoarse

Returns the name of the class of which object is an instance. Returns FALSE if object is not an object.

If object is omitted when inside a class, the name of that class is returned.

If the object is an instance of a class which exists in a namespace, the qualified namespaced name of that class is returned.

Erori/Excepții

If get_class() is called with anything other than an object, an E_WARNING level error is raised.

Istoricul schimbărilor

Versiune Descriere
7.2.0 NULL was removed as the default value for object, and is no longer a valid input.
5.3.0 NULL became the default value for object, so passing NULL to object now has the same result as not passing any value.

Exemple

Example #1 Using get_class()

<?php

class foo {
    function 
name()
    {
        echo 
"My name is " get_class($this) , "\n";
    }
}

// create an object
$bar = new foo();

// external call
echo "Its name is " get_class($bar) , "\n";

// internal call
$bar->name();

?>

Exemplul de mai sus va afișa:

Its name is foo
My name is foo

Example #2 Using get_class() in superclass

<?php

abstract class bar {
    public function 
__construct()
    {
        
var_dump(get_class($this));
        
var_dump(get_class());
    }
}

class 
foo extends bar {
}

new 
foo;

?>

Exemplul de mai sus va afișa:

string(3) "foo"
string(3) "bar"

Example #3 Using get_class() with namespaced classes

<?php

namespace Foo\Bar;

class 
Baz {
    public function 
__construct()
    {

    }
}

$baz = new \Foo\Bar\Baz;

var_dump(get_class($baz));
?>

Exemplul de mai sus va afișa:

string(11) "Foo\Bar\Baz"

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