get_declared_interfaces()

get_declared_interfaces() — Returns an array of all declared interfaces.

Built-in function of PHP 8.5. The manual lists it as available in PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

Signature

get_declared_interfaces(): array

Parameters

This function takes no parameters.

Return value

Returns an array of the names of the declared interfaces in the current script.

Example

A runnable snippet:

print_r(get_declared_interfaces());

Output:

Array ( [0] => Traversable [1] => IteratorAggregate [2] => Iterator [3] => ArrayAccess [4] => reflector [5] => RecursiveIterator [6] => SeekableIterator )

See also

interface_exists(), get_declared_classes(), class_implements()

All PHP 8.5 built-in functions

Reference card built from the PHP manual page get_declared_interfaces() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.