Je was op zoek naar: offsetstring (Engels - Russisch)

$offsetstring =( $offset < 0 ? '-' : '+' )
$offsetstring =( $offset < 0 ? '-' : '+' )

$offsetstring . '' ); //this is the correct xml format
$offsetstring . '' ); //this is the correct xml format

$offsetstring = 'z' ; //no need to calculate offset,as default timezone is already utc
$offsetstring = 'z' ; //no need to calculate offset,as default timezone is already utc