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<div id="function.mysql-insert-id" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">mysql_insert_id</h1>
  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">mysql_insert_id</span> &mdash; <span class="dc-title">Get the ID generated in the last query</span></p>

 </div>

 <div id="function.mysql-insert-id-refsynopsisdiv">
  <div class="warning"><strong class="warning">Avviso</strong>
   <p class="para">Questa enstensione  deprecata da PHP 5.5.0, e sarà rimossa in futuro.
Al suo posto, usare l&#039;estensione <a href="book.mysqli.php" class="link">MySQLi</a> o <a href="ref.pdo-mysql.php" class="link">PDO_MySQL</a>.
Vedere anche la guida <a href="mysqlinfo.api.choosing.php" class="link">MySQL: scelta dell&#039;API</a> e
le <a href="faq.databases.php#faq.databases.mysql.deprecated" class="link">FAQ relative</a> per ulteriori informazioni. 
Le alternative a questa funzione includono:</p>
   <ul class="simplelist">
    <li><span class="function"><a href="mysqli.insert-id.php" class="function">mysqli_insert_id()</a></span></li>
    <li><span class="methodname"><a href="pdo.lastinsertid.php" class="methodname">PDO::lastInsertId()</a></span></li>
   </ul>
  </div>
 </div>

 <div class="refsect1 description" id="refsect1-function.mysql-insert-id-description">
  <h3 class="title">Descrizione</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>mysql_insert_id</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.resource.php" class="type resource">resource</a></span> <code class="parameter">$link_identifier</code><span class="initializer"> = NULL</span></span>): <span class="type"><a href="language.types.integer.php" class="type int">int</a></span></div>

  <p class="simpara">
   Retrieves the ID generated for an AUTO_INCREMENT column by the previous
   query (usually INSERT).
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.mysql-insert-id-parameters">
  <h3 class="title">Elenco dei parametri</h3>
  <dl>
   <dt><code class="parameter">
link_identifier</code></dt><dd><p class="para">La connessione MySQL. Se 
l&#039;identificativo di connessione non è specificato, l&#039;ultima connessione aperta da
<span class="function"><a href="function.mysql-connect.php" class="function">mysql_connect()</a></span> viene assunta. Se questa connessione non è trovata, si
cercherà di crearne una come se <span class="function"><a href="function.mysql-connect.php" class="function">mysql_connect()</a></span> fosse stata chiamata
senza argomenti. Se una connessione non è trovata oppure non viene stabilita, un
avviso di livello <strong><code><a href="errorfunc.constants.php#constant.e-warning">E_WARNING</a></code></strong> viene generato.</p></dd>

  </dl>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.mysql-insert-id-returnvalues">
  <h3 class="title">Valori restituiti</h3>
  <p class="simpara">
   The ID generated for an AUTO_INCREMENT column by the previous
   query on success, <code class="literal">0</code> if the previous
   query does not generate an AUTO_INCREMENT value, or <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> if
   no MySQL connection was established.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.mysql-insert-id-examples">
  <h3 class="title">Esempi</h3>
  <div class="example" id="example-1">
   <p><strong>Example #1 <span class="function"><strong>mysql_insert_id()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">, </span><span style="color: #DD0000">'mysql_user'</span><span style="color: #007700">, </span><span style="color: #DD0000">'mysql_password'</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$link</span><span style="color: #007700">) {<br />    die(</span><span style="color: #DD0000">'Could not connect: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">());<br />}<br /></span><span style="color: #0000BB">mysql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">'mydb'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">mysql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO mytable (product) values ('kossu')"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Last inserted record has id %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysql_insert_id</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
   </div>

  </div>
 </div>


 <div class="refsect1 notes" id="refsect1-function.mysql-insert-id-notes">
  <h3 class="title">Note</h3>
  <div class="caution"><strong class="caution">Attenzione</strong>
   <p class="simpara">
    <span class="function"><strong>mysql_insert_id()</strong></span> will convert the return type of the
    native MySQL C API function <code class="literal">mysql_insert_id()</code> to a type
    of <code class="literal">long</code> (named <span class="type"><a href="language.types.integer.php" class="type int">int</a></span> in PHP). If your
    AUTO_INCREMENT column has a column type of BIGINT (64 bits) the
    conversion may result in an incorrect value. Instead, use the internal
    MySQL SQL function LAST_INSERT_ID() in an SQL query. For more information
    about PHP&#039;s maximum integer values, please see the
    <a href="language.types.integer.php" class="link">integer</a> documentation.
   </p>
  </div>
  <blockquote class="note"><p><strong class="note">Nota</strong>: 
   <span class="simpara">
    Because <span class="function"><strong>mysql_insert_id()</strong></span> acts on the last performed
    query, be sure to call <span class="function"><strong>mysql_insert_id()</strong></span> immediately
    after the query that generates the value.
   </span>
  </p></blockquote>
  <blockquote class="note"><p><strong class="note">Nota</strong>: 
   <span class="simpara">
    The value of the MySQL SQL function
    <code class="literal">LAST_INSERT_ID()</code> always contains the most
    recently generated AUTO_INCREMENT value, and is not reset
    between queries.
  </span>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.mysql-insert-id-seealso">
  <h3 class="title">Vedere anche:</h3>
  <ul class="simplelist">
   <li><span class="function"><a href="function.mysql-query.php" class="function" rel="rdfs-seeAlso">mysql_query()</a> - Send a MySQL query</span></li>
   <li><span class="function"><a href="function.mysql-info.php" class="function" rel="rdfs-seeAlso">mysql_info()</a> - Get information about the most recent query</span></li>
  </ul>
 </div>

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