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archived-doc-fr/reference/spl/functions/iterator-count.xml
2023-02-25 14:21:03 -05:00

157 lines
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 70ac605e66b5ce0c03a345df92297f3e03f088ca Maintainer: yannick Status: ready -->
<!-- Reviewed: yes -->
<refentry xml:id="function.iterator-count" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>iterator_count</refname>
<refpurpose>
Compte de nombre d'éléments dans un itérateur
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>iterator_count</methodname>
<methodparam><type class="union"><type>Traversable</type><type>array</type></type><parameter>iterator</parameter></methodparam>
</methodsynopsis>
<para>
Compte les éléments dans un itérateur.
Il n'est pas garantie que la fonction <function>iterator_count</function>
conserve la position courante de l'itérateur <parameter>iterator</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>iterator</parameter></term>
<listitem>
<para>
L'itérateur dont il faut compter les éléments.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Le nombre d'éléments dans l'itérateur <parameter>iterator</parameter>.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.2.0</entry>
<entry>
Le type de <parameter>iterator</parameter> a été élargi de
<type>Traversable</type> à
<type class="union"><type>Traversable</type><type>array</type></type>.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Exemple avec <function>iterator_count</function></title>
<programlisting role="php">
<![CDATA[
<?php
$iterator = new ArrayIterator(array('recipe'=>'crêpes', 'oeufs', 'lait', 'farine'));
var_dump(iterator_count($iterator));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
int(4)
]]>
</screen>
</example>
<example>
<title>Exemple avec <function>iterator_count</function> qui modifie la position</title>
<programlisting role="php">
<![CDATA[
<?php
$iterator = new ArrayIterator(['one', 'two', 'three']);
var_dump($iterator->current());
var_dump(iterator_count($iterator));
var_dump($iterator->current());
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
string(3) "one"
int(3)
NULL
]]>
</screen>
</example>
<example>
<title>Exemple avec <function>iterator_count</function> dans une boucle &foreach;</title>
<programlisting role="php">
<![CDATA[
<?php
$iterator = new ArrayIterator(['one', 'two', 'three']);
foreach ($iterator as $key => $value) {
echo "$key: $value (", iterator_count($iterator), ")\n";
}?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
0: one (3)
]]>
</screen>
</example>
</para>
</refsect1>
</refentry>
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