is there any way to hook a debug function into a hook such as init and retrieve every php function whose operates there?

is there any way to hook a debug function into a hook such as init and retrieve every php function whose operates there ?

what i meant with PHP function is its name ? is it possible to retrieve any php function name via php built in f开发者_JAVA百科unction ?

debug_backtrace()

PS. http://php.net/manual-lookup.php?pattern=debug ;)

Specifically for Wordpress: WordPress › wp pear debug « WordPress Plugins