function.memcache-get.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>Retrieve item from 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-flush.html">Memcache::flush</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.memcache-getextendedstats.html">Memcache::getExtendedStats</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-get" class="refentry"> <div class="refnamediv"> <h1 class="refname">Memcache::get</h1> <p class="verinfo">(PECL memcache:0.2-2.1.2)</p><p class="refpurpose"><span class="refname">Memcache::get</span> — <span class="dc-title">Retrieve item from the server</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><b>Memcache::get</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$key</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter reference">&$flags</tt></span> ] )</div> <div class="methodsynopsis dc-description"> <span class="type">array</span> <span class="methodname"><b><b>Memcache::get</b></b></span> ( <span class="methodparam"><span class="type">array</span> <tt class="parameter">$keys</tt></span> [, <span class="methodparam"><span class="type">array</span> <tt class="parameter reference">&$flags</tt></span> ] )</div> <p class="para rdfs-comment"> <b>Memcache::get()</b> returns previously stored data if an item with such <i><tt class="parameter">key</tt></i> exists on the server at this moment. </p> <p class="para"> You can pass array of keys to <b>Memcache::get()</b> to get array of values. The result array will contain only found key-value pairs. </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 or array of keys to fetch. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">flags</tt></i></span> <dd> <p class="para"> If present, flags fetched along with the values will be written to this parameter. These flags are the same as the ones given to for example <a href="function.memcache-set.html" class="function">Memcache::set()</a>. The lowest byte of the int is reserved for pecl/memcache internal usage (e.g. to indicate compression and serialization status). </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the string associated with the <i><tt class="parameter">key</tt></i> or <b><tt>FALSE</tt></b> on failure or if such <i><tt class="parameter">key</tt></i> was not found. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>Memcache::get()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">/* procedural API */<br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= </span><span style="color: #0000BB">memcache_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$var </span><span style="color: #007700">= </span><span style="color: #0000BB">memcache_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">, </span><span style="color: #DD0000">'some_key'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* OO API */<br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= new </span><span style="color: #0000BB">Memcache</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$var </span><span style="color: #007700">= </span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">get</span><span style="color: #007700">(</span><span style="color: #DD0000">'some_key'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* <br />You also can use array of keys as a parameter.<br />If such item wasn't found at the server, the result<br />array simply will not include such key.<br />*/<br /><br />/* procedural API */<br /></span><span style="color: #0000BB">$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 /></span><span style="color: #0000BB">$var </span><span style="color: #007700">= </span><span style="color: #0000BB">memcache_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">, Array(</span><span style="color: #DD0000">'some_key'</span><span style="color: #007700">, </span><span style="color: #DD0000">'another_key'</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">/* OO API */<br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= new </span><span style="color: #0000BB">Memcache</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$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 /></span><span style="color: #0000BB">$var </span><span style="color: #007700">= </span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">get</span><span style="color: #007700">(Array(</span><span style="color: #DD0000">'some_key'</span><span style="color: #007700">, </span><span style="color: #DD0000">'second_key'</span><span style="color: #007700">));<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.memcache-flush.html">Memcache::flush</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.memcache-getextendedstats.html">Memcache::getExtendedStats</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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