pdo.constants.html

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     <b><tt>PDO::CURSOR_FWDONLY</tt></b> and 
     <b><tt>PDO::CURSOR_SCROLL</tt></b>.  Stick with
     <b><tt>PDO::CURSOR_FWDONLY</tt></b> unless you know that you need a
     scrollable cursor.
    </span>
   </dd>

  </dt>


  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_DRIVER_NAME</tt></b>
     (<a href="language.types.string.html" class="type string">string</a>)
   </span>

   <dd>

    <span class="simpara">
     Returns the name of the driver.
    </span>
    <p class="para">
     <div class="example"><p><b>Example #1 using PDO::ATTR_DRIVER_NAME</b></p>
     <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">$db</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getAttribute</span><span style="color: #007700">(</span><span style="color: #0000BB">PDO</span><span style="color: #007700">::</span><span style="color: #0000BB">ATTR_DRIVER_NAME</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #DD0000">'mysql'</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"Running&nbsp;on&nbsp;mysql;&nbsp;doing&nbsp;something&nbsp;mysql&nbsp;specific&nbsp;here\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
     </div>

     </div>
     </p>
   </dd>

  </dt>


  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_ORACLE_NULLS</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Convert empty strings to SQL NULL values on data fetches.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_PERSISTENT</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 
     Request a persistent connection, rather than creating a new connection.
     See <a href="pdo.connections.html" class="link">Connections and Connection
     management</a> for more information on this attribute.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_STATEMENT_CLASS</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 

    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_FETCH_CATALOG_NAMES</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 
     Prepend the containing catalog name to each column name returned in the
     result set. The catalog name and column name are separated by a decimal
     (.) character.  Support of this attribute is at the driver level; it may
     not be supported by your driver.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_FETCH_TABLE_NAMES</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 
     Prepend the containing table name to each column name returned in the
     result set. The table name and column name are separated by a decimal (.)
     character.  Support of this attribute is at the driver level; it may not
     be supported by your driver.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_STRINGIFY_FETCHES</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 

    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_MAX_COLUMN_LEN</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 

    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_DEFAULT_FETCH_MODE</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 
     Available since PHP 5.2.0
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ATTR_EMULATE_PREPARES</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Available since PHP 5.1.3.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ERRMODE_SILENT</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Do not raise an error or exception if an error occurs. The developer is
     expected to explicitly check for errors.  This is the default mode.
     See <a href="pdo.error-handling.html" class="link">Errors and error handling</a>
     for more information about this attribute.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ERRMODE_WARNING</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Issue a PHP E_WARNING message if an error occurs.
     See <a href="pdo.error-handling.html" class="link">Errors and error handling</a>
     for more information about this attribute.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ERRMODE_EXCEPTION</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Throw a <a href="class.pdoexception.html" class="classname">PDOException</a> if an error occurs.
     See <a href="pdo.error-handling.html" class="link">Errors and error handling</a>
     for more information about this attribute.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::CASE_NATURAL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Leave column names as returned by the database driver.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::CASE_LOWER</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara"> 
     Force column names to lower case.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::CASE_UPPER</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Force column names to upper case.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::NULL_NATURAL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">

    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::NULL_EMPTY_STRING</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">

    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::NULL_TO_STRING</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">

    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::FETCH_ORI_NEXT</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Fetch the next row in the result set. Valid only for scrollable cursors.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::FETCH_ORI_PRIOR</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Fetch the previous row in the result set. Valid only for scrollable
     cursors.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::FETCH_ORI_FIRST</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Fetch the first row in the result set. Valid only for scrollable cursors.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::FETCH_ORI_LAST</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Fetch the last row in the result set. Valid only for scrollable cursors.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::FETCH_ORI_ABS</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Fetch the requested row by row number from the result set. Valid only
     for scrollable cursors.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::FETCH_ORI_REL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Fetch the requested row by relative position from the current position
     of the cursor in the result set. Valid only for scrollable cursors.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::CURSOR_FWDONLY</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Create a PDOStatement object with a forward-only cursor.  This is the
     default cursor choice, as it is the fastest and most common data access
     pattern in PHP.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::CURSOR_SCROLL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Create a PDOStatement object with a scrollable cursor. Pass the
     PDO::FETCH_ORI_* constants to control the rows fetched from the result set.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::ERR_NONE</tt></b>
     (<a href="language.types.string.html" class="type string">string</a>)
   </span>

   <dd>

    <span class="simpara"> 
     Corresponds to SQLSTATE &#039;00000&#039;, meaning that the SQL statement was
     successfully issued with no errors or warnings.  This constant is for
     your convenience when checking <a href="pdo.errorcode.html" class="function">PDO::errorCode()</a> or
     <a href="pdostatement.errorcode.html" class="function">PDOStatement::errorCode()</a> to determine if an error
     occurred.  You will usually know if this is the case by examining the
     return code from the method that raised the error condition anyway.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_ALLOC</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allocation event
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_FREE</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Deallocation event
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_EXEC_PRE</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Event triggered prior to execution of a prepared statement.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_EXEC_POST</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Event triggered subsequent to execution of a prepared statement.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_FETCH_PRE</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Event triggered prior to fetching a result from a resultset.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_FETCH_POST</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Event triggered subsequent to fetching a result from a resultset.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>PDO::PARAM_EVT_NORMALIZE</tt></b>
    (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Event triggered during bound parameter registration
     allowing the driver to normalize the parameter name.
    </span>
   </dd>

  </dt>

 </dl>

</div>
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