key()

key()

function key(array $array): mixed

Returns the key of the element under the array’s internal pointer.

Parameters:

• $array (array)

Returns: mixed

Availability

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

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

Internals

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