function.apc-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>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Cache a new variable in the data store</title>
</head>
<body><div class="manualnavbar" style="text-align: center;">
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</div><hr /><div id="function.apc-add" class="refentry">
<div class="refnamediv">
<h1 class="refname">apc_add</h1>
<p class="verinfo">(PECL apc >= 3.0.13)</p><p class="refpurpose"><span class="refname">apc_add</span> — <span class="dc-title">
Cache a new variable in the data store
</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.apc-add-description">
<h3 class="title">Beschreibung</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>apc_add</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$var</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$ttl</code><span class="initializer"> = 0</span></span>
] )</div>
<div class="methodsynopsis dc-description">
<span class="type">array</span> <span class="methodname"><strong>apc_add</strong></span>
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$values</code></span>
[, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$unused</code><span class="initializer"> = NULL</span></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$ttl</code><span class="initializer"> = 0</span></span>
]] )</div>
<p class="para rdfs-comment">
Caches a variable in the data store, only if it's not already stored.
</p>
<blockquote class="note"><p><strong class="note">Hinweis</strong>:
<span class="simpara">
Unlike many other mechanisms in PHP, variables stored using
<span class="function"><strong>apc_add()</strong></span> will persist between requests (until the
value is removed from the cache).
</span>
</p></blockquote>
</div>
<div class="refsect1 parameters" id="refsect1-function.apc-add-parameters">
<h3 class="title">Parameter-Liste</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">key</code></dt>
<dd>
<p class="para">
Store the variable using this name. <code class="parameter">key</code>s are
cache-unique, so attempting to use <span class="function"><strong>apc_add()</strong></span> to
store data with a key that already exists will not overwrite the
existing data, and will instead return <strong><code>FALSE</code></strong>. (This is the only
difference between <span class="function"><strong>apc_add()</strong></span> and
<span class="function"><a href="function.apc-store.html" class="function">apc_store()</a></span>.)
</p>
</dd>
<dt>
<code class="parameter">var</code></dt>
<dd>
<p class="para">
The variable to store
</p>
</dd>
<dt>
<code class="parameter">ttl</code></dt>
<dd>
<p class="para">
Time To Live; store <code class="parameter">var</code> in the cache for
<code class="parameter">ttl</code> seconds. After the
<code class="parameter">ttl</code> has passed, the stored variable will be
expunged from the cache (on the next request). If no <code class="parameter">ttl</code>
is supplied (or if the <code class="parameter">ttl</code> is
<em>0</em>), the value will persist until it is removed from
the cache manually, or otherwise fails to exist in the cache (clear,
restart, etc.).
</p>
</dd>
<dt>
<code class="parameter">values</code></dt>
<dd>
<p class="para">
Names in key, variables in value.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.apc-add-returnvalues">
<h3 class="title">Rückgabewerte</h3>
<p class="para">
Returns TRUE if something has effectively been added into the cache, FALSE otherwise.
Second syntax returns array with error keys.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.apc-add-examples">
<h3 class="title">Beispiele</h3>
<p class="para">
<div class="example" id="example-361">
<p><strong>Beispiel #1 A <span class="function"><strong>apc_add()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$bar </span><span style="color: #007700">= </span><span style="color: #DD0000">'BAR'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">apc_add</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">, </span><span style="color: #0000BB">$bar</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">apc_fetch</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">));<br />echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$bar </span><span style="color: #007700">= </span><span style="color: #DD0000">'NEVER GETS SET'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">apc_add</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">, </span><span style="color: #0000BB">$bar</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">apc_fetch</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">));<br />echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>Das oben gezeigte Beispiel erzeugt folgende
Ausgabe:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
string(3) "BAR"
string(3) "BAR"
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.apc-add-seealso">
<h3 class="title">Siehe auch</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.apc-store.html" class="function" rel="rdfs-seeAlso">apc_store()</a> - Cache a variable in the data store</span></li>
<li class="member"><span class="function"><a href="function.apc-fetch.html" class="function" rel="rdfs-seeAlso">apc_fetch()</a> - Fetch a stored variable from the cache</span></li>
<li class="member"><span class="function"><a href="function.apc-delete.html" class="function" rel="rdfs-seeAlso">apc_delete()</a> - Removes a stored variable from the cache</span></li>
</ul>
</p>
</div>
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