define()

define()

function define(string $constant_name, mixed $value): bool

Defines a named constant at runtime.

Parameters:

• $constant_name (string)
• $value (mixed)

Returns: bool

Availability

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

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

Internals

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