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<h1 class="refname">mysqli::$errno</h1>
<h1 class="refname">mysqli_errno</h1>
<p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::$errno</span> -- <span class="refname">mysqli_errno</span> — <span class="dc-title">Returns the error code for the most recent function call</span></p>
</div>
<div class="refsect1 description" id="refsect1-mysqli.errno-description">
<h3 class="title">Description</h3>
<p class="para">Object oriented style</p>
<div class="fieldsynopsis"><span class="type">int</span> <var class="varname"><a href="mysqli.errno.html">$mysqli->errno</a></var>;</div>
<p class="para">Procedural style</p>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>mysqli_errno</strong></span>
( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter">$link</code></span>
)</div>
<p class="para rdfs-comment">
Returns the last error code for the most recent MySQLi function call that
can succeed or fail.
</p>
<p class="para">
Client error message numbers are listed in the MySQL
<var class="filename">errmsg.h</var> header file, server error message numbers
are listed in <var class="filename">mysqld_error.h</var>.
In the MySQL source distribution you can find a complete list of error
messages and error numbers in the file
<var class="filename">Docs/mysqld_error.txt</var>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-mysqli.errno-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.errno-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
An error code value for the last call, if it failed. zero means no error
occurred.
</p>
</div>
<div class="refsect1 examples" id="refsect1-mysqli.errno-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-1658">
<p><strong>Example #1 <var class="varname"><var class="varname">$mysqli->errno</var></var> example</strong></p>
<div class="example-contents"><p>Object oriented style</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$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">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">connect_errno</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">connect_error</span><span style="color: #007700">);<br /> exit();<br />}<br /><br />if (!</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SET a=1"</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Errorcode: %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">errno</span><span style="color: #007700">);<br />}<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 />if (!</span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"SET a=1"</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Errorcode: %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_errno</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">));<br />}<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>
Errorcode: 1193
</pre></div>
</div>
</div>
</div>
<div class="refsect1 seealso" id="refsect1-mysqli.errno-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="mysqli.connect-errno.html" class="function" rel="rdfs-seeAlso">mysqli_connect_errno()</a> - Returns the error code from last connect call</span></li>
<li class="member"> <span class="function"><a href="mysqli.connect-error.html" class="function" rel="rdfs-seeAlso">mysqli_connect_error()</a> - Returns a string description of the last connect error</span></li>
<li class="member"> <span class="function"><a href="mysqli.error.html" class="function" rel="rdfs-seeAlso">mysqli_error()</a> - Returns a string description of the last error</span></li>
<li class="member"> <span class="function"><a href="mysqli.sqlstate.html" class="function" rel="rdfs-seeAlso">mysqli_sqlstate()</a> - Returns the SQLSTATE error from previous MySQL operation</span></li>
</ul>
</p>
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