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 ?

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debug_backtrace()

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

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