php-doc-en/reference/array/functions/next.xml
Daniel Egeberg 96c9d88bad Converted to utf-8
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@297028 c90b9560-bf6c-de11-be94-00142212c4b1
2010-03-28 22:10:10 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.next" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>next</refname>
<refpurpose>Advance the internal array pointer of an array</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>mixed</type><methodname>next</methodname>
<methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
</methodsynopsis>
<para>
<function>next</function> behaves like
<function>current</function>, with one difference. It advances
the internal array pointer one place forward before returning the
element value. That means it returns the next array value and
advances the internal array pointer by one.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>array</parameter></term>
<listitem>
<para>
The <type>array</type> being affected.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the array value in the next place that's pointed to by the
internal array pointer, or &false; if there are no more elements.
</para>
&return.falseproblem;
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Example use of <function>next</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>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<simpara>
You won't be able to distinguish the end of an array from a
<type>boolean</type> &false; element. To properly traverse an array
which may contain &false; elements, see the <function>each</function>
function.
</simpara>
</note>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>current</function></member>
<member><function>end</function></member>
<member><function>prev</function></member>
<member><function>reset</function></member>
<member><function>each</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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