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<title>Returns the auto generated id used in the last query</title>
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<h1 class="refname">mysqli::$insert_id</h1>
<h1 class="refname">mysqli_insert_id</h1>
<p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::$insert_id</span> -- <span class="refname">mysqli_insert_id</span> — <span class="dc-title">Returns the auto generated id used in the last query</span></p>
</div>
<div class="refsect1 description" id="refsect1-mysqli.insert-id-description">
<h3 class="title">Description</h3>
<p class="para">Object oriented style</p>
<div class="fieldsynopsis"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <var class="varname"><a href="mysqli.insert-id.html">$mysqli->insert_id</a></var>;</div>
<p class="para">Procedural style</p>
<div class="methodsynopsis dc-description">
<span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>mysqli_insert_id</strong></span>
( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter">$link</code></span>
)</div>
<p class="para rdfs-comment">
The <span class="function"><strong>mysqli_insert_id()</strong></span> function returns the ID generated
by a query on a table with a column having the AUTO_INCREMENT attribute. If
the last query wasn't an INSERT or UPDATE statement or if the modified table
does not have a column with the AUTO_INCREMENT attribute, this function will
return zero.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
Performing an INSERT or UPDATE statement using the LAST_INSERT_ID()
function will also modify the value returned by the
<span class="function"><strong>mysqli_insert_id()</strong></span> function.
</p>
</p></blockquote>
</div>
<div class="refsect1 parameters" id="refsect1-mysqli.insert-id-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">
link</code></em></span><dd>
<p class="para">Procedural style only: A link identifier
returned by <span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span> or <span class="function"><a href="mysqli.init.html" class="function">mysqli_init()</a></span>
</p></dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-mysqli.insert-id-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The value of the <em>AUTO_INCREMENT</em> field that was updated
by the previous query. Returns zero if there was no previous query on the
connection or if the query did not update an <em>AUTO_INCREMENT</em>
value.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
If the number is greater than maximal int value, <span class="function"><strong>mysqli_insert_id()</strong></span>
will return a string.
</p>
</p></blockquote>
</div>
<div class="refsect1 examples" id="refsect1-mysqli.insert-id-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-1672">
<p><strong>Example #1 <var class="varname"><var class="varname">$mysqli->insert_id</var></var> example</strong></p>
<div class="example-contents"><p>Object oriented style</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE myCity LIKE City"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"New Record has id %d.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">insert_id</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* drop table */<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE myCity"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>Procedural style</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"CREATE TABLE myCity LIKE City"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO myCity VALUES (NULL, 'Stuttgart', 'DEU', 'Stuttgart', 617000)"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"New Record has id %d.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_insert_id</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">/* drop table */<br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"DROP TABLE myCity"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">mysqli_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above examples will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
New Record has id 1.
</pre></div>
</div>
</div>
</div>
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