array_key_exists()

array_key_exists()

function array_key_exists(string $key, array $array): bool

Checks if the given key or index exists in the array.

Parameters:

• $key (string)
• $array (array)

Returns: bool

Availability

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

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

Internals

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