function.memcache-set.html
来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 180 行
HTML
180 行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Store data at the server</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.memcache-replace.html">Memcache::replace</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.memcache-setcompressthreshold.html">Memcache::setCompressThreshold</a></div> <div class="up"><a href="ref.memcache.html">Memcache Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.memcache-set" class="refentry"> <div class="refnamediv"> <h1 class="refname">Memcache::set</h1> <p class="verinfo">(PECL memcache:0.2-2.1.2)</p><p class="refpurpose"><span class="refname">Memcache::set</span> — <span class="dc-title">Store data at the server</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>Memcache::set</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$key</tt></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$var</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flag</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$expire</tt></span> ]] )</div> <p class="para rdfs-comment"> <b>Memcache::set()</b> stores an item <i><tt class="parameter">var</tt></i> with <i><tt class="parameter">key</tt></i> on the memcached server. Parameter <i><tt class="parameter">expire</tt></i> is expiration time in seconds. If it's 0, the item never expires (but memcached server doesn't guarantee this item to be stored all the time, it could be deleted from the cache to make place for other items). You can use <b><tt>MEMCACHE_COMPRESSED</tt></b> constant as <i><tt class="parameter">flag</tt></i> value if you want to use on-the-fly compression (uses zlib). <blockquote><p><b class="note">Note</b>: Remember that resource variables (i.e. file and connection descriptors) cannot be stored in the cache, because they cannot be adequately represented in serialized state. <br /> </p></blockquote> Also you can use <b>memcache_set()</b> function. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">key</tt></i></span> <dd> <p class="para"> The key that will be associated with the item. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">var</tt></i></span> <dd> <p class="para"> The variable to store. Strings and integers are stored as is, other types are stored serialized. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">flag</tt></i></span> <dd> <p class="para"> Use <b><tt>MEMCACHE_COMPRESSED</tt></b> to store the item compressed (uses zlib). </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">expire</tt></i></span> <dd> <p class="para"> 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> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>Memcache::set()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">/* procedural API */<br /><br />/* connect to memcached server */<br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= </span><span style="color: #0000BB">memcache_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*<br />set value of item with key 'var_key'<br />using 0 as flag value, compression is not used<br />expire time is 30 seconds<br />*/<br /></span><span style="color: #0000BB">memcache_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">, </span><span style="color: #DD0000">'var_key'</span><span style="color: #007700">, </span><span style="color: #DD0000">'some variable'</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">30</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">memcache_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">, </span><span style="color: #DD0000">'var_key'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> <div class="example"> <p><b>Example #2 <b>Memcache::set()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">/* OO API */<br /><br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= new </span><span style="color: #0000BB">Memcache</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* connect to memcached server */<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*<br />set value of item with key 'var_key', using on-the-fly compression<br />expire time is 50 seconds<br />*/<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">set</span><span style="color: #007700">(</span><span style="color: #DD0000">'var_key'</span><span style="color: #007700">, </span><span style="color: #DD0000">'some really big variable'</span><span style="color: #007700">, </span><span style="color: #0000BB">MEMCACHE_COMPRESSED</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">get</span><span style="color: #007700">(</span><span style="color: #DD0000">'var_key'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.memcache-add.html" class="function" rel="rdfs-seeAlso">Memcache::add()</a></li> <li class="member"><a href="function.memcache-replace.html" class="function" rel="rdfs-seeAlso">Memcache::replace()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.memcache-replace.html">Memcache::replace</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.memcache-setcompressthreshold.html">Memcache::setCompressThreshold</a></div> <div class="up"><a href="ref.memcache.html">Memcache Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?