is_subclass_of()

is_subclass_of()

function is_subclass_of(mixed $object_or_class, string $class, bool $allow_string = true): bool

Checks if the object has a given class as one of its parents or implements it.

Parameters:

• $object_or_class (mixed)
• $class (string)
• $allow_string (bool), default true, optional

Returns: bool

Availability

• Compiled (AOT): supported by the Elephc code generator.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/symbols/is_subclass_of.rs).

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how is_subclass_of is implemented in the compiler, see the internals page.