Date.timezone - This is a directive that was added in PHP V5.1 to set the default timezone for use with the DateTime functions introduced then.

timezone—这是在PHPV5.1中添加的一个指令，用于设置默认时区，然后用于后面将要介绍的DateTime函数。

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Datetime contains useful date and time manipulation functions.

datetime包含有用的日期和时间处理函数。

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IDS now supports the following new built-in SQL functions to perform common mathematical, casting, and bitmap operations, and for manipulating character string, date, and datetime values

IDS现在支持一些新的内置SQL函数，这些函数有的执行常见的数学、类型转换和位图操作，有的操纵字符串、日期和日期时间值

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IDS now supports the following new built-in SQL functions to perform common mathematical, casting, and bitmap operations, and for manipulating character string, date, and datetime values

IDS现在支持一些新的内置SQL函数，这些函数有的执行常见的数学、类型转换和位图操作，有的操纵字符串、日期和日期时间值

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