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<title>Predefined Constants</title>
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</div><hr /><div id="mysqlnd-memcache.constants" class="appendix">
<h1>Predefined Constants</h1>
<p class="simpara">
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
</p>
<p class="para">
<em class="emphasis">MySQL Memcache Plugin related</em>
</p>
<p class="para">
<dl>
<dt id="constant.mysqlnd-memcache-default-regexp">
<span class="term">
<strong><code>MYSQLND_MEMCACHE_DEFAULT_REGEXP</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
Default regular expression (PCRE style) used for matching <em>SELECT</em>
statements that will be mapped into a MySQL Memcache Plugin access point, if possible.
</span>
<span class="simpara">
It is also possible to use <span class="function"><a href="function.mysqlnd-memcache-set.html" class="function">mysqlnd_memcache_set()</a></span>, but the default
approach is using this regular expression for pattern matching.
</span>
</dd>
</dt>
</dl>
</p>
<p class="para">
<em class="emphasis">Assorted</em>
</p>
<p class="para">
The version number of this plugin can be obtained by using
<strong><code>MYSQLND_MEMCACHE_VERSION</code></strong> or
<strong><code>MYSQLND_MEMCACHE_VERSION_ID</code></strong>.
<strong><code>MYSQLND_MEMCACHE_VERSION</code></strong>
is the string representation of the numerical version number
<strong><code>MYSQLND_MEMCACHE_VERSION_ID</code></strong>, which is an integer such as 10000.
Developers can calculate the version number as follows.
</p>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version (part)</th>
<th>Example</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>Major*10000</td>
<td>1*10000 = 10000</td>
</tr>
<tr>
<td>Minor*100</td>
<td>0*100 = 0</td>
</tr>
<tr>
<td>Patch</td>
<td>0 = 0</td>
</tr>
<tr>
<td>MYSQLND_MEMCACHE_VERSION_ID</td>
<td>10000</td>
</tr>
</tbody>
</table>
</p>
<p class="para">
<dl>
<dt id="constant.mysqlnd-memcache-version">
<span class="term">
<strong><code>MYSQLND_MEMCACHE_VERSION</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
Plugin version string, for example, "<span class="quote">1.0.0-alpha</span>".
</span>
</dd>
</dt>
<dt id="constant.mysqlnd-memcache-version-id">
<span class="term">
<strong><code>MYSQLND_MEMCACHE_VERSION_ID</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Plugin version number, for example, 10000.
</span>
</dd>
</dt>
</dl>
</p>
</div>
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