# ob_clean

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

ob_clean — Clean (erase) the output buffer

### Description

ob_clean ( ) : void

This function discards the contents of the output buffer.

This function does not destroy the output buffer like ob_end_clean() does.

The output buffer must be started by ob_start() with PHP_OUTPUT_HANDLER_CLEANABLE flag. Otherwise ob_clean() will not work.

### Return Values

No value is returned.

### See Also

- ob_flush() - Flush (send) the output buffer
- ob_end_flush() - Flush (send) the output buffer and turn off output buffering
- ob_end_clean() - Clean (erase) the output buffer and turn off output buffering