Source of: /manual/en/iconv.configuration.php
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<div id="iconv.configuration" class="section">
<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">
</p><table class="doctable table">
<caption><b>Iconv configuration options</b></caption>
<thead valign="middle">
<tr valign="middle">
<th>Name</th>
<th>Default</th>
<th>Changeable</th>
<th>Changelog</th>
</tr>
</thead>
<tbody valign="middle" class="tbody">
<tr valign="middle">
<td align="left">iconv.input_encoding</td>
<td align="left">"ISO-8859-1"</td>
<td align="left">PHP_INI_ALL</td>
<td align="left">Available since PHP 4.0.5.</td>
</tr>
<tr valign="middle">
<td align="left">iconv.output_encoding</td>
<td align="left">"ISO-8859-1"</td>
<td align="left">PHP_INI_ALL</td>
<td align="left">Available since PHP 4.0.5.</td>
</tr>
<tr valign="middle">
<td align="left">iconv.internal_encoding</td>
<td align="left">"ISO-8859-1"</td>
<td align="left">PHP_INI_ALL</td>
<td align="left">Available since PHP 4.0.5.</td>
</tr>
</tbody>
</table>
<p>
For further details and definitions of the
PHP_INI_* modes, see the <a href="configuration.changes.modes.php" class="xref">Where a configuration setting may be set</a>.
</p>
<div class="warning"><b class="warning">Warning</b>
<p class="para">
Some systems (like IBM AIX) use "ISO8859-1" instead of "ISO-8859-1" so this
value has to be used in configuration options and function parameters.
</p>
</div>
<blockquote><p><b class="note">Note</b>:
Configuration option <i><tt class="parameter">iconv.input_encoding</tt></i>
is
currently not used for anything.
<br />
</p></blockquote>
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