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使锟斤拷 NULL 锟斤拷为锟斤拷锟斤拷锟斤拷锟斤拷 set_error_handler() 锟斤拷锟斤拷锟矫达拷锟斤拷锟斤拷锟斤拷锟�
锟斤拷使锟斤拷 NULL 锟斤拷锟斤拷set_error_handler() 锟斤拷 set_exception_handler() 时锟斤拷锟斤拷锟节分别返伙拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷斐ｏ拷锟斤拷锟斤拷锟斤拷
pack() 锟斤拷 unpack() 使锟斤拷 "a"锟斤拷"A"锟斤拷式锟斤拷锟斤拷时锟斤拷锟斤拷为锟斤拷锟斤拷锟戒化锟斤拷 Detailed notes on these changes are available.

MessageFormatter::format() 锟斤拷锟斤拷锟斤拷睾锟斤拷锟斤拷锟斤拷锟� related functions now accept named arguments and mixed numeric and named arguments when PHP is linked to ICU 4.8 or later.
MessageFormatter::format() and related functions no longer error when an insufficient number of arguments have been provided. Instead, the placeholders will not be substituted.
MessageFormatter::format() and MessageFormatter::parse() are no longer limited to second precision when dealing with times.
IntlDateFormatter::__construct() and datefmt_create() now accept IntlTimeZone and DateTimeZone objects for the timezone argument, and IntlCalendar objects for the calendar argument. Furthermore, if the time zone is omitted and the calendar doesn't specify a time zone, PHP's default time zone from date_default_timezone_get() is now used instead of the default ICU time zone.
IntlDateFormatter::getCalendar() and datefmt_get_calendar() return false if the IntlDateFormatter object was created with an IntlCalendar instance instead of one of the IntlDateFormatter constants.
锟斤拷 IntlDateFormatter 锟斤拷锟斤拷之锟解，IntlDateFormatter::setCalendar() 锟斤拷 datefmt_set_calendar()锟斤拷锟节斤拷锟斤拷 IntlCalendar 锟斤拷锟斤拷
IntlDateFormatter::format() 锟斤拷 datefmt_format() 锟斤拷锟节斤拷锟斤拷 IntlCalendar 锟斤拷锟斤拷