php-doc-en/reference/pdo/functions/PDOStatement-errorCode.xml

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  <refentry id="function.PDOStatement-errorCode">
   <refnamediv>
    <refname>PDOStatement::errorCode</refname>
    <refpurpose>
     Fetch the error code associated with the last operation on the statement handle
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <methodsynopsis>
     <type>int</type><methodname>PDOStatement::errorCode</methodname>
     <void/>
    </methodsynopsis>
     &warn.experimental.func;

    <para>
     Returns an integer value that maps to the error categories defined
     in the PDO constants.
    </para>
    <example><title>Determining which category of error occurred</title>
     <programlisting role="php">
<![CDATA[
<?php
/* Provoke an error -- the BONES table does not exist */
$err = $dbh->prepare('SELECT skull FROM bones');
$err->execute();

echo "\nPDOStatement::errorCode(): ";
switch ($err->errorCode()) {
    case PDO_ERR_NONE:
        echo "No error!\n";
        break;
    case PDO_ERR_CANT_MAP:
        echo "Error: Unable to map data types between database and PHP.\n";
        break;
    case PDO_ERR_SYNTAX:
        echo "Error: incorrect syntax\n";
        break;
    case PDO_ERR_CONSTRAINT:
        echo "Error: The request would violate a constraint.\n";
        break;
    case PDO_ERR_NOT_FOUND:
        echo "Error: The object could not be found.\n";
        break;
    case PDO_ERR_ALREADY_EXISTS:
        echo "Error: The object already exists.\n";
        break;
    case PDO_ERR_NOT_IMPLEMENTED:
        echo "Error: The requested function is not implemented.\n";
        break;
    case PDO_ERR_MISMATCH:
        echo "Error: mismatch\n";
        break;
    case PDO_ERR_TRUNCATED:
        echo "Error: The value was truncated because the input value was longer
    than the maximum column length.\n";
        break;
    case PDO_ERR_DISCONNECTED:
        echo "Error: The connection to the requested database has been closed.\n";
        break;
}
?>
]]>
     </programlisting>
    </example>
    &example.outputs;
    <screen>
<![CDATA[
PDOStatement::errorCode(): Error: The object could not be found.
]]>
    </screen>
   </refsect1>
  </refentry>

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