mb_strtolower()

mb_strtolower()

function mb_strtolower(string $string, ?string $encoding = null): string

Converts every character to its Unicode lowercase mapping.

Parameters:

• $string (string)
• $encoding (?string), default null, optional

Returns: string

Availability

• Compiled (AOT): supported by the Elephc code generator.
• eval() (magician interpreter): supported through a declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/string/mb_strtolower.rs).

No examples yet. Check examples/ and showcases/ for usage patterns.

Internals

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