function.memcache-add.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Add an item to 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="ref.memcache.html">Memcache Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.memcache-addserver.html">Memcache::addServer</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-add" class="refentry"> <div class="refnamediv"> <h1 class="refname">Memcache::add</h1> <p class="verinfo">(PECL memcache:0.2-2.1.2)</p><p class="refpurpose"><span class="refname">Memcache::add</span> — <span class="dc-title">Add an item to 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::add</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::add()</b> stores variable <i><tt class="parameter">var</tt></i> with <i><tt class="parameter">key</tt></i> only if such key doesn't exist at the server yet. Also you can use <b>memcache_add()</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. Returns <b><tt>FALSE</tt></b> if such key already exist. For the rest <b>Memcache::add()</b> behaves similarly to <a href="function.memcache-set.html" class="function">Memcache::set()</a>. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>Memcache::add()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />$memcache_obj </span><span style="color: #007700">= </span><span style="color: #0000BB">memcache_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* procedural API */<br /></span><span style="color: #0000BB">memcache_add</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">, </span><span style="color: #DD0000">'var_key'</span><span style="color: #007700">, </span><span style="color: #DD0000">'test variable'</span><span style="color: #007700">, </span><span style="color: #0000BB">false</span><span style="color: #007700">, </span><span style="color: #0000BB">30</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* OO API */<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">add</span><span style="color: #007700">(</span><span style="color: #DD0000">'var_key'</span><span style="color: #007700">, </span><span style="color: #DD0000">'test variable'</span><span style="color: #007700">, </span><span style="color: #0000BB">false</span><span style="color: #007700">, </span><span style="color: #0000BB">30</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-set.html" class="function" rel="rdfs-seeAlso">Memcache::set()</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="ref.memcache.html">Memcache Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.memcache-addserver.html">Memcache::addServer</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
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