class_implements

Description
Syntax
Examples
Links

Description

The class_implements of SPL for PHP returns the interfaces which are implemented by the given class or interface.

Syntax

class_implements(
    object|string $object_or_class,
    bool $autoload = true
): array|false

Parameters

object_or_class

An object (class instance) or a string (class or interface name).

autoload

Whether to autoload if not already loaded.

Return

Returns an array on success, or false when the given class doesn't exist.

Examples

1 · object_or_class · object

<?

interface myinterface
{
}
class myclass implements myinterface
{
}

$object_or_class = new myclass;

$return = class_implements($object_or_class);

print_r($return);

?>

Array
(
    [myinterface] => myinterface
)

2 · object_or_class · class

<?

interface myinterface
{
}
class myclass implements myinterface
{
}

$object_or_class = "myclass";

$return = class_implements($object_or_class);

print_r($return);

?>

Array
(
    [myinterface] => myinterface
)

3 · autoload · false

<?

spl_autoload_register();

interface myinterface
{
}
class myclass implements myinterface
{
}

$object_or_class = "myclass";
$autoload = false;

$return = class_implements($object_or_class, $autoload);

print_r($return);

?>

Array
(
    [myinterface] => myinterface
)

4 · autoload · true

<?

spl_autoload_register();

interface myinterface
{
}
class myclass implements myinterface
{
}

$object_or_class = "myclass";
$autoload = true;

$return = class_implements($object_or_class, $autoload);

print_r($return);

?>

Array
(
    [myinterface] => myinterface
)

5 · multiple

<?

interface myinterface1
{
}
interface myinterface2
{
}
interface myinterface3
{
}
class myclass implements myinterface1, myinterface2, myinterface3
{
}

$object_or_class = "myclass";

$return = class_implements($object_or_class);

print_r($return);

?>

Array
(
    [myinterface1] => myinterface1
    [myinterface2] => myinterface2
    [myinterface3] => myinterface3
)

6 · multiple · extends

<?

interface myinterface1
{
}
interface myinterface2 extends myinterface1
{
}
interface myinterface3 extends myinterface2
{
}
interface myinterface4 extends myinterface3
{
}
class myclass implements myinterface4
{
}

$object_or_class = "myclass";

$return = class_implements($object_or_class);

print_r($return);

?>

Array
(
    [myinterface4] => myinterface4
    [myinterface2] => myinterface2
    [myinterface1] => myinterface1
    [myinterface3] => myinterface3
)