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<title>Predefined Constants</title>
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<h1>Predefined Constants</h1>
<table class="doctable table">
<caption><strong>Memcache Constants</strong></caption>
<thead>
<tr>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>
<strong><code>MEMCACHE_COMPRESSED</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</td>
<td>
Used to turn on-the-fly data compression on with
<span class="function"><a href="memcache.set.html" class="function">Memcache::set()</a></span>,
<span class="function"><a href="memcache.add.html" class="function">Memcache::add()</a></span> and
<span class="function"><a href="memcache.replace.html" class="function">Memcache::replace()</a></span>.
</td>
</tr>
<tr>
<td>
<strong><code>MEMCACHE_HAVE_SESSION</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</td>
<td>
1 if this Memcache session handler is available, 0 otherwise.
</td>
</tr>
<tr>
<td>
<strong><code>MEMCACHE_USER1</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</td>
<td>
Used to turn user-defined application flag on with
<span class="function"><a href="memcache.set.html" class="function">Memcache::set()</a></span>,
<span class="function"><a href="memcache.add.html" class="function">Memcache::add()</a></span> and
<span class="function"><a href="memcache.replace.html" class="function">Memcache::replace()</a></span>.
</td>
</tr>
<tr>
<td>
<strong><code>MEMCACHE_USER2</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</td>
<td>
Used to turn user-defined application flag on with
<span class="function"><a href="memcache.set.html" class="function">Memcache::set()</a></span>,
<span class="function"><a href="memcache.add.html" class="function">Memcache::add()</a></span> and
<span class="function"><a href="memcache.replace.html" class="function">Memcache::replace()</a></span>.
</td>
</tr>
<tr>
<td>
<strong><code>MEMCACHE_USER3</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</td>
<td>
Used to turn user-defined application flag on with
<span class="function"><a href="memcache.set.html" class="function">Memcache::set()</a></span>,
<span class="function"><a href="memcache.add.html" class="function">Memcache::add()</a></span> and
<span class="function"><a href="memcache.replace.html" class="function">Memcache::replace()</a></span>.
</td>
</tr>
<tr>
<td>
<strong><code>MEMCACHE_USER4</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</td>
<td>
Used to turn user-defined application flag on with
<span class="function"><a href="memcache.set.html" class="function">Memcache::set()</a></span>,
<span class="function"><a href="memcache.add.html" class="function">Memcache::add()</a></span> and
<span class="function"><a href="memcache.replace.html" class="function">Memcache::replace()</a></span>.
</td>
</tr>
</tbody>
</table>
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