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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<!-- splitted from ./en/functions/filesystem.xml, last change in rev 1.23 -->
<refentry id="function.realpath">
<refnamediv>
<refname>realpath</refname>
<refpurpose>Returns canonicalized absolute pathname</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>realpath</methodname>
<methodparam><type>string</type><parameter>path</parameter></methodparam>
</methodsynopsis>
<para>
<function>realpath</function> expands all symbolic links and
resolves references to '/./', '/../' and extra '/' characters in
the input <parameter>path</parameter> and return the canonicalized
absolute pathname. The resulting path will have no symbolic link,
'/./' or '/../' components.
</para>
<para>
<function>realpath</function> returns &false; on failure, e.g. if
the file does not exist. On BSD systems <function>realpath</function>
doesn't fail if only the last <parameter>path</parameter> component
doesn't exist, while other systems will return &false;.
</para>
<para>
<example>
<title><function>realpath</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$real_path = realpath("../../index.php");
?>
]]>
</programlisting>
</example>
</para>
<para>
See also <function>basename</function>,
<function>dirname</function>, and
<function>pathinfo</function>.
</para>
</refsect1>
</refentry>
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