mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-19 10:28:54 +00:00
37771eeb9e
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@165096 c90b9560-bf6c-de11-be94-00142212c4b1
76 lines
2.3 KiB
XML
76 lines
2.3 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!-- $Revision: 1.6 $ -->
|
|
<!-- splitted from ./en/functions/array.xml, last change in rev 1.2 -->
|
|
<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>&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>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../../../../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|