PHP. Руководство по PHP. 2005
ob_get_level
ob_get_level
(PHP4>= 4.2.0, PHP5)ob_get_level --
Return the nesting level of the output buffering mechanism
Description
int ob_get_level (void)
This will return the level of nested output buffering handlers
or zero if output buffering is not activated.
See also ob_start() and
ob_get_length
ob_get_status