ob_start()

ob_start()

function ob_start(mixed $callback = null, int $chunk_size = 0, int $flags = 112): bool

Turns on output buffering.

Parameters:

• $callback (mixed), default null, optional
• $chunk_size (int), default 0, optional
• $flags (int), default 112, 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/core/ob_start.rs).

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

Internals

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