<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >time</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Date/Time 日期/时间函数" HREF="ref.datetime.html"><LINK REL="PREVIOUS" TITLE="strtotime" HREF="function.strtotime.html"><LINK REL="NEXT" TITLE="timezone_abbreviations_list" HREF="function.timezone-abbreviations-list.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.strtotime.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.timezone-abbreviations-list.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.time" ></A >time</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN30102" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >time -- 返回当前的 Unix 时间戳</DIV ><DIV CLASS="refsect1" ><A NAME="AEN30105" ></A ><H2 >说明</H2 >int <B CLASS="methodname" >time</B > ( void )<BR ></BR ><P > 返回自从 Unix 纪元(格林威治时间 1970 年 1 月 1 日 00:00:00)到当前时间的秒数。 </P ><DIV CLASS="tip" ><BLOCKQUOTE CLASS="tip" ><P ><B >提示: </B > 自 PHP 5.1 起在 <CODE CLASS="varname" >$_SERVER['REQUEST_TIME']</CODE > 中保存了发起该请求时刻的时间戳。 </P ></BLOCKQUOTE ></DIV ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN30116" ></A ><P ><B >例 1. <B CLASS="function" >time()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$nextWeek </font><font color="#007700">= </font><font color="#0000BB">time</font><font color="#007700">() + (</font><font color="#0000BB">7 </font><font color="#007700">* </font><font color="#0000BB">24 </font><font color="#007700">* </font><font color="#0000BB">60 </font><font color="#007700">* </font><font color="#0000BB">60</font><font color="#007700">);<br /> </font><font color="#FF8000">// 7 days; 24 hours; 60 mins; 60secs<br /></font><font color="#007700">echo </font><font color="#DD0000">'Now: '</font><font color="#007700">. </font><font color="#0000BB">date</font><font color="#007700">(</font><font color="#DD0000">'Y-m-d'</font><font color="#007700">) .</font><font color="#DD0000">"\n"</font><font color="#007700">;<br />echo </font><font color="#DD0000">'Next Week: '</font><font color="#007700">. </font><font color="#0000BB">date</font><font color="#007700">(</font><font color="#DD0000">'Y-m-d'</font><font color="#007700">, </font><font color="#0000BB">$nextWeek</font><font color="#007700">) .</font><font color="#DD0000">"\n"</font><font color="#007700">;<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >上例的输出类似于:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Now: 2005-03-30 Next Week: 2005-04-07</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > 参见 <A HREF="function.date.html" ><B CLASS="function" >date()</B ></A > 和 <A HREF="function.microtime.html" ><B CLASS="function" >microtime()</B ></A >。 </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.strtotime.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.timezone-abbreviations-list.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >strtotime</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.datetime.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >timezone_abbreviations_list</TD ></TR ></TABLE ></DIV ></BODY ></HTML >