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<title>Runtime Configuration</title>
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<h2 class="title">Runtime Configuration</h2>
<p class="simpara">
The behaviour of these functions is affected by settings in <var class="filename">php.ini</var>.
</p>
<p class="para">
<table class="doctable table">
<caption><strong>Filter Configuration Options</strong></caption>
<thead>
<tr>
<th>Name</th>
<th>Default</th>
<th>Changeable</th>
<th>Changelog</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td><a href="filter.configuration.html#ini.filter.default" class="link">filter.default</a></td>
<td>"unsafe_raw"</td>
<td>PHP_INI_PERDIR</td>
<td>PHP_INI_ALL in filter <= 0.9.4. Available since PHP 5.2.0.</td>
</tr>
<tr>
<td><a href="filter.configuration.html#ini.filter.default-flags" class="link">filter.default_flags</a></td>
<td>NULL</td>
<td>PHP_INI_PERDIR</td>
<td>PHP_INI_ALL in filter <= 0.9.4. Available since PHP 5.2.0.</td>
</tr>
</tbody>
</table>
For further details and definitions of the
PHP_INI_* modes, see the <a href="configuration.changes.modes.html" class="xref">Where a configuration setting may be set</a>.
</p>
<p class="para">Here's a short explanation of
the configuration directives.</p>
<p class="para">
<dl>
<dt id="ini.filter.default">
<span class="term">
<em><code class="parameter">filter.default</code></em>
<span class="type"><a href="language.types.string.html" class="type string">string</a></span>
</span>
<dd>
<p class="para">
Filter all <var class="varname"><var class="varname"><a href="reserved.variables.get.html" class="classname">$_GET</a></var></var>, <var class="varname"><var class="varname"><a href="reserved.variables.post.html" class="classname">$_POST</a></var></var>,
<var class="varname"><var class="varname"><a href="reserved.variables.cookies.html" class="classname">$_COOKIE</a></var></var>, <var class="varname"><var class="varname"><a href="reserved.variables.request.html" class="classname">$_REQUEST</a></var></var> and
<var class="varname"><var class="varname"><a href="reserved.variables.server.html" class="classname">$_SERVER</a></var></var> data by this filter.
Original data can be accessed through <span class="function"><a href="function.filter-input.html" class="function">filter_input()</a></span>.
</p>
<p class="para">
Accepts the name of the filter you like to use by default. See the
existing <a href="filter.filters.html" class="link">filter list</a> for the list
of the filter names.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
Be careful about the default flags for the default filters. You should explicitly
set them to the value you want. For example, to configure the default filter to
behave exactly like <span class="function"><a href="function.htmlspecialchars.html" class="function">htmlspecialchars()</a></span> you need to set them
default flags to 0 as shown below.
</p>
<p class="para">
<div class="example" id="example-5083">
<p><strong>Example #1 Configuring the default filter to act like htmlspecialchars</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
filter.default = full_special_chars<br />filter.default_flags = 0</span>
</code></div>
</div>
</div>
</p>
</p></blockquote>
</dd>
</dt>
<dt id="ini.filter.default-flags">
<span class="term">
<em><code class="parameter">filter.default_flags</code></em>
<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>
</span>
<dd>
<p class="para">
Default flags to apply when the default filter is set. This is set to
<strong><code>FILTER_FLAG_NO_ENCODE_QUOTES</code></strong> by default for backwards
compatibility reasons. See the <a href="filter.filters.flags.html" class="link">flag list</a>
for the list of all the flag names.
</p>
</dd>
</dt>
</dl>
</p>
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