Checks if the class is an interface
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PHP Manual ReflectionClass Checks if the class is an interface

ReflectionClass::isInterface

(PHP 5, PHP 7, PHP 8)

ReflectionClass::isInterface — Checks if the class is an interface

public ReflectionClass::isInterface(): bool

Checks whether the class is an interface.

This function has no parameters.

Returns true on success or false on failure.

Example #1 Basic usage of ReflectionClass::isInterface()

<?phpinterface SomeInterface {    public function interfaceMethod();}$class = new ReflectionClass('SomeInterface');var_dump($class->isInterface());?>

The above example will output:

bool(true)