php-doc-en/reference/mysqli/functions/mysqli-error.xml

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  <refentry id="function.mysqli-error">
   <refnamediv>
    <refname>mysqli_error</refname>
    <refpurpose>Returns a string description of the last error</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <para>Procedural style:</para>
     <methodsynopsis>
      <type>string</type><methodname>mysqli_error</methodname>
      <methodparam><type>object</type><parameter>link</parameter></methodparam>
     </methodsynopsis>
    <para>Object oriented style (property)</para>
    <classsynopsis>
     <ooclass><classname>mysqli</classname></ooclass>
     <fieldsynopsis><type>string</type><varname>error</varname></fieldsynopsis>
    </classsynopsis>
    <para>
     The <function>mysqli_error</function> function is identical to the corresponding
     <function>mysqli_errno</function> function in every way, except instead of returning
     an integer error code the <function>mysqli_error</function> function will return
     a string representation of the last error to occur for the database connection 
     represented by the <parameter>link</parameter> parameter. If no error has occured,
     this function will return an empty string.
    </para>
   </refsect1>
   <refsect1>
    <title>Return values</title>
    <para>
      A string that describes the error. An empty string if no error occurred. 
    </para>
   </refsect1>
   <refsect1>
    <title>Example</title>
    <para>
     <example>
      <title>Using the mysqli_error function</title>
      <programlisting role="php">
<![CDATA[
<?php
                                                                         
    /* Fail to open a connection */
    $host = "no_such_host";
    $link = mysqli_connect($host, "username", "password") or 
            die("Couldn't connect : " . mysqli_error());
                                                                                                          
?>
]]>
      </programlisting>
     </example>
    </para>
   </refsect1>
   <refsect1>
    <title>See also</title>
    <para>
     <function>mysqli_errno</function>, <function>mysqli_sqlstate</function>.
    </para>
   </refsect1>
  </refentry>

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