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<refentry xml:id="function.prev" xmlns="http://docbook.org/ns/docbook">

<refnamediv>

<refname>prev</refname>

<refpurpose>Recule le pointeur courant de tableau</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type>mixed</type><methodname>prev</methodname>

<methodparam><type class="union"><type>array</type><type>object</type></type><parameter role="reference">array</parameter></methodparam>

</methodsynopsis>

<para>

Recule le pointeur courant de tableau.

</para>

<para>

<function>prev</function> se comporte exactement comme

<function>next</function>, mais elle fait reculer le pointeur

plutôt que de l'avancer.

</para>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

<varlistentry>

<term><parameter>array</parameter></term>

<listitem>

<para>

Le tableau d'entrée.

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

</refsect1>

<refsect1 role="returnvalues">

&reftitle.returnvalues;

<para>

Retourne la valeur précédente du tableau suivant le pointeur interne

du tableau, ou &false; s'il n'y a plus d'élément.

</para>

&return.falseproblem;

</refsect1>

<refsect1 role="changelog">

&reftitle.changelog;

<informaltable>

<tgroup cols="2">

<thead>

<row>

<entry>&Version;</entry>

<entry>&Description;</entry>

</row>

</thead>

<tbody>

&standard.changelog.calling-on-objects;

</tbody>

</tgroup>

</informaltable>

</refsect1>

<refsect1 role="examples">

&reftitle.examples;

<para>

<example>

<title>Exemple avec <function>prev</function></title>

<programlisting role="php">

<![CDATA[

<?php

$transport = array('foot', 'bike', 'car', 'plane');

echo $mode = current($transport), PHP_EOL; // $mode = 'foot';

echo $mode = next($transport), PHP_EOL; // $mode = 'bike';

echo $mode = next($transport), PHP_EOL; // $mode = 'car';

echo $mode = prev($transport), PHP_EOL; // $mode = 'bike';

echo $mode = end($transport), PHP_EOL; // $mode = 'plane';

?>

]]>

</programlisting>

</example>

</para>

</refsect1>

<refsect1 role="notes">

&reftitle.notes;

<note>

<simpara>

Il n'est pas possible de distinguer le début d'un tableau

de l'élément <type>bool</type> &false;.

Pour faire la distinction, vérifiez si la <function>key</function> de

l'élément <function>prev</function> n'est pas

&null;.

</simpara>

</note>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<para>

<simplelist>

<member><function>current</function></member>

<member><function>end</function></member>

<member><function>next</function></member>

<member><function>reset</function></member>

<member><function>each</function></member>

</simplelist>

</para>

</refsect1>

</refentry>

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