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HomeBackend DevelopmentPHP Tutorialphp时间函数出错及解决办法 php date_default_timezone_set()函数用法

php时间函数出错及解决方法 php date_default_timezone_set()函数用法

php时间函数出错及解决方法:php date_default_timezone_set()函数 date.timezone时间区这些因素都是影响php时间的,最主要的问题是默认php时间函数用的是格林威治标准时间和我们的时间(北京时间)差了正好8个小时,这也是php时间函数出错解决的人口。

以前碰到一个问题问题,就是echo date(“y-m-d h:i:s”,time())回来的时间总是与实际时间对不上,今天终于在网上找到了原因和解决方法,分享如下:

从php5.1.0开始,php.ini里加入了date.timezone时间区这个选项,默认情况下是关闭的也就是显示的时间(无论用什么php命令)都是格林威治标准时间和我们的时间(北京时间)差了正好8个小时,有以下3中方法可以恢复正常的时间。

1,最简单的方法就是不要用php5.1以上的版本

2,如果一定要用,而且不能修改php.ini,则需要在关于时间的初始化的语句的
上面加上 date_default_timezone_set (XXX);

3,一劳永逸,仅限能修改php.ini。打开php.ini查找date.timezone时间区去掉前面的分号
= 后面加XXX,重启http服务(如apache2或iis等)即可。如果php.ini找不到date.timezone时间区这行,是不是就没办法了呢,当然不是啦,哈哈没有的话就自己加嘛,自己动手丰衣足食。我加了这样一句date.timezone = “PRC”,问题就搞定了,高兴一下.

关于XXX,大陆内地可用的值是:Asia/Chongqing ,Asia/Shanghai ,Asia/Urumqi (依次为重庆,上海,乌鲁木齐)
港台地区可用:Asia/Macao ,Asia/Hong_Kong ,Asia/Taipei (依次为澳门,香港,台北)
还有新加坡:Asia/Singapore
老外好像把北京漏调了
其他可用的值是:Etc/GMT-8 ,Singapore ,Hongkong ,PRC
PRC是什么?PRC是中华人民共和国啊-_-
———————————————————————————————————————
解决方式:

在页头使用date_default_timezone_set()函数设置我的默认时区为北京时间

date_default_timezone_set(‘PRC’);
echo date(‘Y-m-d H:i:s’);

时间和服务器当前时间一样了!!祝贺之
附date_default_timezone_set()函数用法如下

——————————–
date_default_timezone_set()

(PHP 5 >= 5.1.0RC1)
date_default_timezone_set ()– 设定用于一个脚本中所有日期时间函数的默认时区
说明
bool date_default_timezone_set ( string timezone_identifier )

date_default_timezone_set() 设定用于所有日期时间函数的默认时区。

注: 自 PHP 5.1.0 起(此版本日期时间函数被重写了),如果时区不合法则每个对日期时间函数的调用都会产生一条 E_NOTICE 级别的错误信息。

参数

timezone_identifier

时区标识符,例如 UTC 或 Europe/Lisbon

返回值
本函数永远返回 TRUE(即使 timezone_identifier 参数不合法)。

——————————————————————————————

再附上时区标识符:

CET
CST6CDT
Cuba
EET
Egypt
Eire
EST
EST5EDT
Etc/GMT
Etc/GMT+0
Etc/GMT+1
Etc/GMT+10
Etc/GMT+11
Etc/GMT+12
Etc/GMT+2
Etc/GMT+3
Etc/GMT+4
Etc/GMT+5
Etc/GMT+6
Etc/GMT+7
Etc/GMT+8
Etc/GMT+9
Etc/GMT-0
Etc/GMT-1
Etc/GMT-10
Etc/GMT-11
Etc/GMT-12
Etc/GMT-13
Etc/GMT-14
Etc/GMT-2
Etc/GMT-3
Etc/GMT-4
Etc/GMT-5
Etc/GMT-6
Etc/GMT-7
Etc/GMT-8
Etc/GMT-9
Etc/GMT0
Etc/Greenwich
Etc/UCT
Etc/Universal
Etc/UTC
Etc/Zulu
Factory
GB
GB-Eire
GMT
GMT+0
GMT-0
GMT0
Greenwich
Hongkong
HST
Iceland
Iran
Israel
Jamaica
Japan
Kwajalein
Libya
MET
MST
MST7MDT
Navajo
NZ
NZ-CHAT
Poland
Portugal
PRC
PST8PDT
ROC
ROK
Singapore
Turkey
UCT
Universal
UTC
W-SU
WET

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