<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
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  <refentry id="function.prev">
   <refnamediv>
    <refname>prev</refname>
    <refpurpose>Rewind the internal array pointer</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>mixed</type><methodname>prev</methodname>
      <methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
     </methodsynopsis>
    <para>
     Returns the array value in the previous place that's pointed to by
     the internal array pointer, or &false; if there are no more
     elements.
     <warning>
      <para>
       If the array contains empty elements then this function will
       return &false; for these elements as well.
       To properly traverse an array which may contain empty elements
       see the <function>each</function> function.
      </para>
     </warning>
    </para>
    <para>
     <function>prev</function> behaves just like
     <function>next</function>, except it rewinds the internal array
     pointer one place instead of advancing it.
    </para>
    <para>
     <example>
      <title>Example use of <function>prev</function> and friends</title>
      <programlisting role="php">
<![CDATA[
<?php
$transport = array('foot', 'bike', 'car', 'plane');
$mode = current($transport); // $mode = 'foot';
$mode = next($transport);    // $mode = 'bike';
$mode = next($transport);    // $mode = 'car';
$mode = prev($transport);    // $mode = 'bike';
$mode = end($transport);     // $mode = 'plane';
?>
]]>
      </programlisting>
     </example>
    </para>
    <para>
     See also <function>current</function>, <function>end</function>,
     <function>next</function>, and <function>reset</function>.
    </para>
   </refsect1>
  </refentry>

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