php设置 timeZone方法
1，函数ini_set()设置时区：
可以在文件开头加入 ini_set('date.timezone','Asia/Shanghai'); // 'Asia/Shanghai' 为上海时区
2，date_default_timezone_set(‘Asia/Shanghai');
3，手动修改php.ini设置打开php找到date.timezone = "PRC" 如有去掉前面的分号,没有的话手动添加！
timeZone设置影响的函数
date()
strtotime()
timeZone设置不影响的函数
time()
gmdate()
测试数据<?php $time=time();$value='PRC';
date_default_timezone_set($value);echodate('Y-m-dH:i:s',$time),"\n";echogmdate('Y-m-dH:i:s',$time),"\n";
var_dump(date_default_timezone_get());$value='Asia/Chongqing';
date_default_timezone_set($value);echodate('Y-m-dH:i:s',$time),"\n";echogmdate('Y-m-dH:i:s',$time),"\n";
var_dump(date_default_timezone_get());$value='Asia/Shanghai';
date_default_timezone_set($value);echodate('Y-m-dH:i:s',$time),"\n";echogmdate('Y-m-dH:i:s',$time),"\n";
var_dump(date_default_timezone_get());$value='Europe/Riga';
date_default_timezone_set($value);echodate('Y-m-dH:i:s',$time),"\n";echogmdate('Y-m-dH:i:s',$time),"\n";
var_dump(date_default_timezone_get());
?>-10-1212:13:51-10-1204:13:51string(3)"PRC"-10-1212:13:51-10-1204:13:51string(14)"Asia/Chongqing"-10-1212:13:51-10-1204:13:51string(13)"Asia/Shanghai"-10-1207:13:51-10-1204:13:51string(11)"Europe/Riga"
