<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Memcache::add</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="Memcache Functions" HREF="ref.memcache.html"><LINK REL="PREVIOUS" TITLE="Memcache Functions" HREF="ref.memcache.html"><LINK REL="NEXT" TITLE="Memcache::addServer" HREF="function.memcache-addserver.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="ref.memcache.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.memcache-addserver.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.Memcache-add" ></A >Memcache::add</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN117803" ></A ><P > (no version information, might be only in CVS)</P >Memcache::add -- Add an item to the server</DIV ><DIV CLASS="refsect1" ><A NAME="AEN117806" ></A ><H2 >说明</H2 >bool <B CLASS="methodname" >Memcache::add</B > ( string key, mixed var [, int flag [, int expire]] )<BR ></BR ><P > <B CLASS="function" >Memcache::add()</B > stores variable <CODE CLASS="parameter" >var</CODE > with <CODE CLASS="parameter" >key</CODE > only if such key doesn't exist at the server yet. Also you can use <B CLASS="function" >memcache_add()</B > function. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN117828" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >key</CODE ></DT ><DD ><P > The key that will be associated with the item. </P ></DD ><DT ><CODE CLASS="parameter" >var</CODE ></DT ><DD ><P > The variable to store. Strings and integers are stored as is, other types are stored serialized. </P ></DD ><DT ><CODE CLASS="parameter" >flag</CODE ></DT ><DD ><P > Use <TT CLASS="constant" ><B >MEMCACHE_COMPRESSED</B ></TT > to store the item compressed (uses zlib). </P ></DD ><DT ><CODE CLASS="parameter" >expire</CODE ></DT ><DD ><P > Expiration time of the item. If it's equal to zero, the item will never expire. You can also use Unix timestamp or a number of seconds starting from current time, but in the latter case the number of seconds may not exceed 2592000 (30 days). </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN117853" ></A ><H2 >返回值</H2 ><P > 如果成功则返回 <TT CLASS="constant" ><B >TRUE</B ></TT >,失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT >。 Returns <TT CLASS="constant" ><B >FALSE</B ></TT > if such key already exist. For the rest <B CLASS="function" >Memcache::add()</B > behaves similarly to <B CLASS="function" >Memcache::set()</B >. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN117861" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN117864" ></A ><P ><B >例 1. <B CLASS="function" >Memcache::add()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />$memcache_obj </font><font color="#007700">= </font><font color="#0000BB">memcache_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#0000BB">11211</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* procedural API */<br /></font><font color="#0000BB">memcache_add</font><font color="#007700">(</font><font color="#0000BB">$memcache_obj</font><font color="#007700">, </font><font color="#DD0000">'var_key'</font><font color="#007700">, </font><font color="#DD0000">'test variable'</font><font color="#007700">, </font><font color="#0000BB">false</font><font color="#007700">, </font><font color="#0000BB">30</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* OO API */<br /></font><font color="#0000BB">$memcache_obj</font><font color="#007700">-></font><font color="#0000BB">add</font><font color="#007700">(</font><font color="#DD0000">'var_key'</font><font color="#007700">, </font><font color="#DD0000">'test variable'</font><font color="#007700">, </font><font color="#0000BB">false</font><font color="#007700">, </font><font color="#0000BB">30</font><font color="#007700">);<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN117868" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><B CLASS="function" >Memcache::set()</B ></TD ></TR ><TR ><TD ><B CLASS="function" >Memcache::replace()</B ></TD ></TR ></TBODY ></TABLE ><P ></P > </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="ref.memcache.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.memcache-addserver.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Memcache Functions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.memcache.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Memcache::addServer</TD ></TR ></TABLE ></DIV ></BODY ></HTML >