format_dateのフォーマット指定子

i18n/sfDateTimeFormatInfo.class.php


 *  Format Character    Associated Property     Example Format Pattern (en-US)
 *  --------------------------------------------------------------------------
 *  d                   ShortDatePattern        MM/dd/yyyy 
 *  D                   LongDatePattern         dddd, dd MMMM yyyy 
 *  F                   FullDateTimePattern     dddd, dd MMMM yyyy HH:mm:ss
 *  m, M                MonthDayPattern         MMMM dd 
 *  r, R                RFC1123Pattern          ddd, dd MMM yyyy HH':'mm':'ss 'GMT'
 *  s                   SortableDateTimePattern yyyy'-'MM'-'dd'T'HH':'mm':'ss 
 *  t                   ShortTimePattern        HH:mm 
 *  T                   LongTimePattern         HH:mm:ss 
 *  Y                   YearMonthPattern        yyyy MMMM 
 *  --------------------------------------------------------------------------