Code Coverage Functions for obtaining coverage information: xdebug_start_code_coverage(); xdebug_get_code_coverage(); xdebug_stop_code_coverage(); Options to xdebug_start_code_coverage(), both only work for files parsed *from* this moment: XDEBUG_CC_UNUSED: Enables scanning of code to figure out which line has executable code. XDEBUG_CC_DEAD_CODE: Enables branch analyzation to figure out whether code can be executed.