php - The standard way for switching from/to user_timezone and gmt -

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php - The standard way for switching from/to user_timezone and gmt -

i utilize php's date_default_timezone_set() , set according user's timezone field in the user table. ease can show date/time users , date/time them.

but storing date related values in database, have utilize standard gmt timezone.

the question: what best or maybe standard way switching to/from user_timezone , gmt?

do suggest me follow these steps when want insert or update field in database?

change timezone using date_default_timezone_set('gmt'); get time using $inserttimestap = time(); or $inserttimestamp = mktime(); change timezone user default using: date_default_timezone_set($this->session->userdata('timezone'));

there absolutely no need utilize date_default_timezone_set('gmt') because converting gmt, there special set of functions function names begin 'gm':

gmmktime() gets timestamp in gmt timezone. gmdate() gives gmt date format.

there gmstrftime() php manual

furthermore it's notable time() returns current timestamp in gmt

php datetime timezone timestamp

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