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<title>Returns the text of the error message from previous MySQL operation</title>
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<div class="refnamediv">
<h1 class="refname">mysql_error</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">mysql_error</span> — <span class="dc-title">Returns the text of the error message from previous MySQL operation</span></p>
</div>
<div id="function.mysql-error-refsynopsisdiv">
<div class="warning"><strong class="warning">Warning</strong>
<p class="para">This extension is deprecated as of PHP 5.5.0, and will be removed in the future.
Instead, the <a href="book.mysqli.html" class="link">MySQLi</a> or <a href="ref.pdo-mysql.html" class="link">PDO_MySQL</a> extension should be used.
See also <a href="mysqlinfo.api.choosing.html" class="link">MySQL: choosing an API</a> guide and
<a href="faq.databases.html#faq.databases.mysql.deprecated" class="link">related FAQ</a> for more information.
Alternatives to this function include:</p>
<ul class="simplelist">
<li class="member"> <span class="function"><a href="mysqli.error.html" class="function">mysqli_error()</a></span></li>
<li class="member"> <span class="methodname"><a href="pdo.errorinfo.html" class="methodname">PDO::errorInfo()</a></span></li>
</ul>
</div>
</div>
<div class="refsect1 description" id="refsect1-function.mysql-error-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>mysql_error</strong></span>
([ <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link_identifier</code><span class="initializer"> = NULL</span></span>
] )</div>
<p class="para rdfs-comment">
Returns the error text from the last MySQL function.
Errors coming back from the MySQL database backend no longer
issue warnings. Instead, use <span class="function"><strong>mysql_error()</strong></span> to
retrieve the error text. Note that this function only returns the
error text from the most recently executed MySQL function (not
including <span class="function"><strong>mysql_error()</strong></span> and
<span class="function"><a href="function.mysql-errno.html" class="function">mysql_errno()</a></span>), so if you want to use it, make
sure you check the value before calling another MySQL function.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.mysql-error-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">
link_identifier</code></em></span><dd>
<p class="para">The MySQL connection. If the
link identifier is not specified, the last link opened by
<span class="function"><a href="function.mysql-connect.html" class="function">mysql_connect()</a></span> is assumed. If no such link is found, it
will try to create one as if <span class="function"><a href="function.mysql-connect.html" class="function">mysql_connect()</a></span> was called
with no arguments. If no connection is found or established, an
<strong><code>E_WARNING</code></strong> level error is generated.</p></dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.mysql-error-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the error text from the last MySQL function, or
<em>''</em> (empty string) if no error occurred.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.mysql-error-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-1577">
<p><strong>Example #1 <span class="function"><strong>mysql_error()</strong></span> example</strong></p>
<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">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 /><br /></span><span style="color: #0000BB">mysql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">"nonexistentdb"</span><span style="color: #007700">, </span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">mysql_errno</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">) . </span><span style="color: #DD0000">": " </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">). </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">mysql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">"kossu"</span><span style="color: #007700">, </span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">mysql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT * FROM nonexistenttable"</span><span style="color: #007700">, </span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">mysql_errno</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">) . </span><span style="color: #DD0000">": " </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
1049: Unknown database 'nonexistentdb'
1146: Table 'kossu.nonexistenttable' doesn't exist
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.mysql-error-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.mysql-errno.html" class="function" rel="rdfs-seeAlso">mysql_errno()</a> - Returns the numerical value of the error message from previous MySQL operation</span></li>
<li class="member"><a href="http://dev.mysql.com/doc/mysql/en/error-handling.html" class="link external">» MySQL error codes</a></li>
</ul>
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