PHP_OUTPUT_HANDLER_STDFLAGS

PHP_OUTPUT_HANDLER_STDFLAGS is one of the accepted parameters for ob_start parameter #3 (optionally as a bitmask).

PHP_OUTPUT_HANDLER_STDFLAGS — The default set of output buffer flags; currently equivalent to PHP_OUTPUT_HANDLER_CLEANABLE | PHP_OUTPUT_HANDLER_FLUSHABLE | PHP_OUTPUT_HANDLER_REMOVABLE.

PHP_OUTPUT_HANDLER_STDFLAGS = 112;