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?>
<div id="function.error-reporting" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">error_reporting</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">error_reporting</span> &mdash; <span class="dc-title">definisce quali errori di PHP vengono restituiti</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.error-reporting-description">
  <h3 class="title">Descrizione</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>error_reporting</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$livello</code><span class="initializer"> = ?</span></span>): <span class="type"><a href="language.types.integer.php" class="type int">int</a></span></div>

  <p class="para rdfs-comment">
   La funzione <span class="function"><strong>error_reporting()</strong></span> imposta la direttiva
   <a href="errorfunc.configuration.php#ini.error-reporting" class="link">error_reporting</a>
   a runtime. PHP ha parecchi livelli d&#039;errore, usando
   questa funzione si imposta il livello per la durata (runtime) dello
   script.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.error-reporting-parameters">
  <h3 class="title">Elenco dei parametri</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">livello</code></dt>
     <dd>
      <p class="para">
       Il nuovo livello di <a href="errorfunc.configuration.php#ini.error-reporting" class="link">error_reporting</a>.
       Accetta una maschera di bit o una costante named. L&#039;utilizzo delle
       costanti named è caldamente consigliato per assicurare la compatibilità con
       versioni future. All&#039;aggiungere di livelli di errore, la gamma degli interi viene incrementata,
       perciò vecchi livelli di errore basati sull&#039;intero non si comporteranno sempre come ci si aspetta.
      </p>
      <p class="para">
       Le costanti disponibili sono elencate qui sotto. Il significato
       di questi livelli d&#039;errore è descritto nelle
       <a href="errorfunc.constants.php" class="link">costanti predefinite</a>.
       <table class="doctable table">
        <caption><strong><span class="function"><strong>error_reporting()</strong></span> valori dei bit</strong></caption>
        
         <thead>
          <tr>
           <th>valore</th>
           <th>costante</th>
          </tr>

         </thead>

         <tbody class="tbody">
          <tr>
           <td>1</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-error" class="link">E_ERROR</a>
           </td>
          </tr>

          <tr>
           <td>2</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-warning" class="link">E_WARNING</a>
           </td>
          </tr>

          <tr>
           <td>4</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-parse" class="link">E_PARSE</a>
           </td>
          </tr>

          <tr>
           <td>8</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-notice" class="link">E_NOTICE</a>
           </td>
          </tr>

          <tr>
           <td>16</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-core-error" class="link">E_CORE_ERROR</a>
           </td>
          </tr>

          <tr>
           <td>32</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-core-warning" class="link">E_CORE_WARNING</a>
           </td>
          </tr>

          <tr>
           <td>64</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-compile-error" class="link">E_COMPILE_ERROR</a>
           </td>
          </tr>

          <tr>
           <td>128</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-compile-warning" class="link">E_COMPILE_WARNING</a>
           </td>
          </tr>

          <tr>
           <td>256</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-user-error" class="link">E_USER_ERROR</a>
           </td>
          </tr>

          <tr>
           <td>512</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-user-warning" class="link">E_USER_WARNING</a>
           </td>
          </tr>

          <tr>
           <td>1024</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-user-error" class="link">E_USER_NOTICE</a>
           </td>
          </tr>

          <tr>
           <td>6143</td>
           <td>
           <a href="errorfunc.constants.php#constant.e-all" class="link">E_ALL</a>
           </td>
         </tr>

          <tr>
           <td>2048</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-strict" class="link">E_STRICT</a>
           </td>
          </tr>

          <tr>
           <td>4096</td>
           <td>
            <a href="errorfunc.constants.php#constant.e-recoverable-error" class="link">E_RECOVERABLE_ERROR</a>
           </td>
          </tr>

         </tbody>
        
       </table>

      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.error-reporting-returnvalues">
  <h3 class="title">Valori restituiti</h3>
  <p class="para">
   Restituisce il precedente livello di <a href="errorfunc.configuration.php#ini.error-reporting" class="link">error_reporting</a>
   .
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.error-reporting-changelog">
  <h3 class="title">Log delle modifiche</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>Versione</th>
       <th>Descrizione</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>5.0.0</td>
       <td>Inserita <strong><code><a href="errorfunc.constants.php#constant.e-strict">E_STRICT</a></code></strong> (non fa parte di <strong><code><a href="errorfunc.constants.php#constant.e-all">E_ALL</a></code></strong>).</td>
      </tr>

      <tr>
       <td>5.2.0</td>
       <td>Inserita <strong><code><a href="errorfunc.constants.php#constant.e-recoverable-error">E_RECOVERABLE_ERROR</a></code></strong>.</td>
      </tr>

      <tr>
       <td>6</td>
       <td><strong><code><a href="errorfunc.constants.php#constant.e-strict">E_STRICT</a></code></strong> è diventata parte di <strong><code><a href="errorfunc.constants.php#constant.e-all">E_ALL</a></code></strong>.</td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.error-reporting-examples">
  <h3 class="title">Esempi</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Example #1 esempi <span class="function"><strong>error_reporting()</strong></span></strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">// Spegni tutte le segnalazioni d'errore<br /></span><span style="color: #0000BB">error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Comunica gli errori semplici di esecuzione<br /></span><span style="color: #0000BB">error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">E_WARNING </span><span style="color: #007700">| </span><span style="color: #0000BB">E_PARSE</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Anche la comunicazone di E_NOTICE può essere utile (per avvisare di<br />// variabili non inizializzate od intercettare nomi di variabili errati...)<br /></span><span style="color: #0000BB">error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ERROR </span><span style="color: #007700">| </span><span style="color: #0000BB">E_WARNING </span><span style="color: #007700">| </span><span style="color: #0000BB">E_PARSE </span><span style="color: #007700">| </span><span style="color: #0000BB">E_NOTICE</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Comunica tutti gli errori eccetto E_NOTICE<br />// questo è il valore di default in php.ini<br /></span><span style="color: #0000BB">error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ALL </span><span style="color: #007700">^ </span><span style="color: #0000BB">E_NOTICE</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Comunica tutti gli errori PHP (il valore 63 puÃ² essere usato in PHP 3)<br /></span><span style="color: #0000BB">error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ALL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Stesso effetto di error_reporting(E_ALL);<br /></span><span style="color: #0000BB">ini_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'error_reporting'</span><span style="color: #007700">, </span><span style="color: #0000BB">E_ALL</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

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


 <div class="refsect1 notes" id="refsect1-function.error-reporting-notes">
  <h3 class="title">Note</h3>
  <div class="warning"><strong class="warning">Avviso</strong>
   <p class="simpara">
    La maggior parte degli errori <strong><code><a href="errorfunc.constants.php#constant.e-strict">E_STRICT</a></code></strong> sono valutati
    al momento della compilazione, quindi questi errori non sono riportati nello script in cui
    <a href="errorfunc.configuration.php#ini.error-reporting" class="link">error_reporting</a> è modificato
    per includere gli errori <strong><code><a href="errorfunc.constants.php#constant.e-strict">E_STRICT</a></code></strong> (e viceversa).
   </p>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.error-reporting-seealso">
  <h3 class="title">Vedere anche:</h3>
  <p class="para">
   <ul class="simplelist">
    <li>La direttiva <a href="errorfunc.configuration.php#ini.display-errors" class="link">display_errors</a></li>
    <li><span class="function"><a href="function.ini-set.php" class="function" rel="rdfs-seeAlso">ini_set()</a> - Imposta le opzioni di configurazione</span></li>
   </ul>
  </p>
 </div>

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