Change php language output

Hi,

Php has the datetimezone function. if i was to loop through it. The timezones would be outputted into english

$tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL);

foreach($tzlist as $t(
    echo $t."</br>";
}

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Is there a way to change the output to french/spanish/german?

Essentially, im worried about localization for countries/states and timezones. Initially, i havent worried about these and just printed these in english.

im curious if i will need to create separate db create a reference to particular countries likely using region/country code and then use that as an index among the db tables

then create multiple country/states/timezones in different languages documents that i would include when needed

or is there a simple way to accomplish this

i would not need to include the countries ./ timezones / state files in every page

Also, timezones should i just rely on the users browsers via js to convert database datetime vars stored in UTC standard into local time? if so then i dont need to worry about the timezones above

any help is greatly appreciated!