archived-doc-fr/reference/array/functions/array-diff.xml

<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- last change to 'array-diff' in en/ tree in rev 1.14 -->
 <refentry id="function.array-diff">
  <refnamediv>
   <refname>array_diff</refname>
   <refpurpose>Calcule la diff&eacute;rence entre deux tableaux</refpurpose>
  </refnamediv>
  <refsect1>
   <title>Description</title>
    <methodsynopsis>
     <type>array</type><methodname>array_diff</methodname>
     <methodparam><type>array</type><parameter>array1</parameter></methodparam>
     <methodparam><type>array</type><parameter>array2</parameter></methodparam>
     <methodparam choice="opt"><type>array</type><parameter>...</parameter></methodparam>
    </methodsynopsis>
   <para>
    <function>array_diff</function> retourne un tableau
    qui contient toutes les valeurs du tableau <parameter>array1</parameter>
    qui sont absentes de tous les autres arguments.
    Notez que les cl&eacute;s sont pr&eacute;serv&eacute;es.
   </para>
   <para>
    <example>
     <title>Exemple avec <function>array_diff</function></title>
     <programlisting role="php">
<![CDATA[
<?php
  $array1 = array ("a" => "vert", "rouge", "bleu", "rouge");
  $array2 = array ("b" => "vert", "jaune", "rouge");
  $result = array_diff ($array1, $array2);
?>
]]>
     </programlisting>
    </example>
   </para>
   <para>
    <varname>$result</varname> contient <literal>array("bleu");</literal>.
    Les valeurs multiples dans $array1 seront toutes trait&eacute;es de la 
    m&ecirc;me fa&ccedil;on.
   </para>
    <note>
     <simpara>
      Deux &eacute;l&eacute;ments sont consid&eacute;r&eacute;s comme &eacute;gaux si et seulement si 
      <literal>(string) $elem1 === (string) $elem2</literal>. En clair :
      lorsque la repr&eacute;sentation en cha&icirc;ne de caract&egrave;res est identique.
      <!-- TODO: example of it... -->
     </simpara>
    </note>
    <warning>
     <simpara>
      Cette fonction &eacute;tait inutilisable en PHP 4.0.4!
      <!-- TODO: when exactly was this broken?... -->
     </simpara>
    </warning>
   <para>
    Voir aussi
    <function>array_intersect</function>,
    <function>array_diff_assoc</function> et
    <function>array_intersect_assoc</function>.
   </para>
  </refsect1>
 </refentry>

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