php-doc-en/reference/filesystem/functions/readlink.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.readlink" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>readlink</refname>
  <refpurpose>Returns the target of a symbolic link</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>string</type><type>false</type></type><methodname>readlink</methodname>
   <methodparam><type>string</type><parameter>path</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>readlink</function> does the same as the readlink C function.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>path</parameter></term>
     <listitem>
      <para>
       The symbolic link path.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the contents of the symbolic link path or &false; on error.
  </para>
  <note>
   <simpara>
    The function fails if <parameter>path</parameter> is not a symlink,
    except on Windows, where the normalized path will be returned.
   </simpara>
  </note>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>readlink</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php

// output e.g. /boot/vmlinux-2.4.20-xfs
echo readlink('/vmlinuz');

?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>is_link</function></member>
    <member><function>symlink</function></member>
    <member><function>linkinfo</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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