<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
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  <refentry id="function.mysql-error">
   <refnamediv>
    <refname>mysql_error</refname>
    <refpurpose>
     Returns the text of the error message from previous MySQL
     operation
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>string</type><methodname>mysql_error</methodname>
      <methodparam choice="opt"><type>resource</type><parameter>
        link_identifier
       </parameter></methodparam>
     </methodsynopsis>
    <para>
     Returns the error text from the last MySQL function, or
     <literal>''</literal> (the empty string) if no error occurred.
    </para>
    <para>
     Errors coming back from the MySQL database backend no longer
     issue warnings. Instead, use <function>mysql_error</function> to
     retrieve the error text. Note that this function only returns the
     error text from the most recently executed MySQL function (not
     including <function>mysql_error</function> and
     <function>mysql_errno</function>), so if you want to use it, make
     sure you check the value before calling another MySQL function.
     <example>
      <title>mysql_error Example</title>
      <programlisting role="php">
<![CDATA[
<?php
    mysql_connect("localhost", "mysql_user", "mysql_password");

    mysql_select_db("nonexistentdb");
    echo mysql_errno() . ": " . mysql_error(). "\n";

    mysql_select_db("kossu");
    mysql_query("SELECT * FROM nonexistenttable");
    echo mysql_errno() . ": " . mysql_error() . "\n";
?>
]]>
      </programlisting>
      <para>
       The above example would produce the following output:
      </para>
       <screen>
<![CDATA[
1049: Unknown database 'nonexistentdb'
1146: Table 'kossu.nonexistenttable' doesn't exist
]]>
       </screen>
     </example>
    </para>
    <note>
     <para>
      If the optional argument is specified the given link
      is used to retrieve the error message. If not, the last
      opened link is used.
     </para>
    </note>
    <para>
     See also: <function>mysql_errno</function>
    </para>
   </refsect1>
  </refentry>

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