in_array()

in_array()

function in_array(mixed $needle, array $haystack, bool $strict = false): bool

Checks if a value exists in an array.

Parameters:

• $needle (mixed)
• $haystack (array)
• $strict (bool), default false, 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/array/in_array.rs).

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

Internals

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