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php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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>Memcache::add</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN117803"
></A
><P
>    (no version information, might be only in CVS)</P
>Memcache::add&nbsp;--&nbsp;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
>&#13;   <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
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>key</CODE
></DT
><DD
><P
>&#13;       The key that will be associated with the item.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>var</CODE
></DT
><DD
><P
>&#13;       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
>&#13;       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
>&#13;       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
>&#13;   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
>&#13;   <TABLE
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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
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?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">-&gt;</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">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN117868"
></A
><H2
>参见</H2
><P
>&#13;   <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
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><P
></P
>
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