:sig
void ob_start()

:params
(none)

:desc
Starts a new output buffer. All subsequent output will be directed into this buffer. Every call to ob_start() starts a new buffer and puts that buffer on the output buffer stack. ob_close() and ob_get_close() destroy buffers and remove them from the stack.

:see
>ob

:related
**PHP:** `ob_start()`, `ob_get_contents()`, `ob_get_clean()`, and related output-buffering APIs
**JavaScript / Node.js:** String accumulation, buffer capture, or render-to-string patterns in server code
