date_default_timezone_set使用

date_default_timezone_set(Etc/GMT);

支持

UTC是什么时间？例子里面看到有date_default_timezone_set("UTC");

你看手册的 附录 H. 所支持时区列表

表格 H-10. Others

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 Zulu

没说UTC是什么来的``````````