get mysql time zone in php

how do i get the srver time zone exept of the date("e") function i need somthing that will check the os time zone and not depends on the php ini and stuff like that...

i need this becouse i need to know the mysql time zone

if i run a query for select global_time_zone i got the res开发者_C百科ult "system" and i need a result like "amrica/new york"

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If it's a linux server you could do

$timezone = file_get_contents('/etc/timezone');

I don't know of any native php functions that would do this, nor do I really see the point? What's wrong with getting the ini specified timezone (which defaults to the server timezone)?