<?php
include_once $_SERVER['DOCUMENT_ROOT'] . '/include/shared-manual.inc';
$TOC = array();
$TOC_DEPRECATED = array();
$PARENTS = array();
include_once dirname(__FILE__) ."/toc/ref.math.inc";
$setup = array (
  'home' => 
  array (
    0 => 'index.php',
    1 => 'PHP Manual',
  ),
  'head' => 
  array (
    0 => 'UTF-8',
    1 => 'fr',
  ),
  'this' => 
  array (
    0 => 'function.hexdec.php',
    1 => 'hexdec',
    2 => 'Convertit de hexad&eacute;cimal en d&eacute;cimal',
  ),
  'up' => 
  array (
    0 => 'ref.math.php',
    1 => 'Fonctions Math',
  ),
  'prev' => 
  array (
    0 => 'function.fpow.php',
    1 => 'fpow',
  ),
  'next' => 
  array (
    0 => 'function.hypot.php',
    1 => 'hypot',
  ),
  'alternatives' => 
  array (
  ),
  'source' => 
  array (
    'lang' => 'fr',
    'path' => 'reference/math/functions/hexdec.xml',
  ),
  'history' => 
  array (
  ),
);
$setup["toc"] = $TOC;
$setup["toc_deprecated"] = $TOC_DEPRECATED;
$setup["parents"] = $PARENTS;
manual_setup($setup);

contributors($setup);

?>
<div id="function.hexdec" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">hexdec</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">hexdec</span> &mdash; <span class="dc-title">Convertit de hexadécimal en décimal</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.hexdec-description">
  <h3 class="title">Description</h3>
   <div class="methodsynopsis dc-description">
    <span class="methodname"><strong>hexdec</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$hex_string</code></span>): <span class="type"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span>|<span class="type"><a href="language.types.float.php" class="type float">float</a></span></span></div>

  <p class="para rdfs-comment">
   Retourne la valeur décimale équivalente à la <a href="language.types.string.php" class="link">chaîne de caractères</a> hexadécimale représenté
   par l&#039;argument <code class="parameter">hex_string</code>.
   <span class="function"><strong>hexdec()</strong></span> convertit une <a href="language.types.string.php" class="link">chaîne de caractères</a> hexadécimale en un
   nombre décimal.
  </p>
  <p class="para">
   <span class="function"><strong>hexdec()</strong></span> ignorera tout caractère non-hexadécimal
   qu&#039;elle rencontrera.
   À partir de PHP 7.4.0 fournir des caractères invalides est obsolète.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.hexdec-parameters">
  <h3 class="title">Liste de paramètres</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">hex_string</code></dt>
     <dd>
      <p class="para">
       La chaîne hexadécimale à convertir
      </p>
     </dd>
    
   </dl>
  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.hexdec-returnvalues">
  <h3 class="title">Valeurs de retour</h3>
  <p class="para">
   La représentation décimale de <code class="parameter">hex_string</code>
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.hexdec-changelog">
  <h3 class="title">Historique</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>Version</th>
      <th>Description</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>7.4.0</td>
      <td>
       Passer des caractères invalides génèrera désormais une notice obsolète.
       Le résultat sera toujours calculé comme si les caractères invalides
       n&#039;existaient pas.
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>

 
 <div class="refsect1 examples" id="refsect1-function.hexdec-examples">
  <h3 class="title">Exemples</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Exemple #1 Exemple avec <span class="function"><strong>hexdec()</strong></span></strong></p>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">hexdec</span><span style="color: #007700">(</span><span style="color: #DD0000">"ee"</span><span style="color: #007700">)); </span><span style="color: #FF8000">// affiche "int(238)"<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">hexdec</span><span style="color: #007700">(</span><span style="color: #DD0000">"a0"</span><span style="color: #007700">)); </span><span style="color: #FF8000">// affiche "int(160)"<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>  
    </div>
  
</div>  
</p>  
<p class="para">  
    <div class="example" id="example-2">  
        <p><strong>Exemple #2 <span class="function"><strong>hexdec()</strong></span> avec des caractères invalides</strong></p>  
        <div class="example-contents">  
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">hexdec</span><span style="color: #007700">(</span><span style="color: #DD0000">"See"</span><span style="color: #007700">));  </span><span style="color: #FF8000">// affiche "int(238)"<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">hexdec</span><span style="color: #007700">(</span><span style="color: #DD0000">"that"</span><span style="color: #007700">)); </span><span style="color: #FF8000">// affiche "int(10)"<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 notes" id="refsect1-function.hexdec-notes">
  <h3 class="title">Notes</h3>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    La fonction peut convertir des nombres qui sont trop larges pour
    tenir dans un type <a href="language.types.integer.php" class="link">entier</a>, dans ce cas, ces valeurs sont retournées
    en tant que <a href="language.types.float.php" class="link">nombre décimal</a>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.hexdec-seealso">
  <h3 class="title">Voir aussi</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.dechex.php" class="function" rel="rdfs-seeAlso">dechex()</a> - Convertit de d&eacute;cimal en hexad&eacute;cimal</span></li>
    <li><span class="function"><a href="function.bindec.php" class="function" rel="rdfs-seeAlso">bindec()</a> - Convertit de binaire en d&eacute;cimal</span></li>
    <li><span class="function"><a href="function.octdec.php" class="function" rel="rdfs-seeAlso">octdec()</a> - Conversion d'octal en d&eacute;cimal</span></li>
    <li><span class="function"><a href="function.base-convert.php" class="function" rel="rdfs-seeAlso">base_convert()</a> - Convertit un nombre entre des bases arbitraires</span></li>
   </ul>
  </p>
 </div>

</div><?php manual_footer($setup); ?>