<?php
$fmt = datefmt_create( "en_US" ,IntlDateFormatter::FULL,IntlDateFormatter::FULL,'America/Los_Angeles',IntlDateFormatter::GREGORIAN ,"MM/dd/yyyy");
echo "pattern of the formatter is : ".datefmt_get_pattern($fmt);
echo "First Formatted output with pattern is ".datefmt_format( $fmt , 0);
datefmt_set_pattern($fmt,'yyyymmdd hh:mm:ss z');
echo "Now pattern of the formatter is : ".datefmt_get_pattern($fmt);
echo "Second Formatted output with pattern is ".datefmt_format( $fmt , 0);
?>