title: PHP Configuration : PDO extension is enabled but not loading
body: <p>I'm using Windows 7, wamp server version 2.2, PHP version 5.2.9. When I try to run my magento websites on a localhost it gives me the following error:</p>
  
  <p>"The PDO extension is required for this adapter but the extension is not loaded"</p>
  
  <p>I have double check that PDO extensions are enabled in the php.ini file. </p>
  
  <pre><code>;extension=php_bz2.dll
  extension=php_curl.dll
  ;extension=php_dba.dll
  ;extension=php_dbase.dll
  ;extension=php_exif.dll
  ;extension=php_fdf.dll
  extension=php_gd2.dll
  ;extension=php_gettext.dll
  ;extension=php_gmp.dll
  ;extension=php_ifx.dll
  ;extension=php_imap.dll
  ;extension=php_interbase.dll
  ;extension=php_ldap.dll
  extension=php_mbstring.dll
  extension=php_mcrypt.dll
  ;extension=php_mhash.dll
  ;extension=php_mime_magic.dll
  ;extension=php_ming.dll
  ;extension=php_msql.dll
  ;extension=php_mssql.dll
  extension=php_mysql.dll
  extension=php_mysqli.dll
  ;extension=php_oci8.dll
  ;extension=php_openssl.dll
  extension=php_pdo.dll
  ;extension=php_pdo_firebird.dll
  ;extension=php_pdo_mssql.dll
  extension=php_pdo_mysql.dll
  ;extension=php_pdo_oci.dll
  ;extension=php_pdo_oci8.dll
  ;extension=php_pdo_odbc.dll
  ;extension=php_pdo_pgsql.dll
  extension=php_pdo_sqlite.dll
  ;extension=php_pgsql.dll
  ;extension=php_pspell.dll
  ;extension=php_shmop.dll
  ;extension=php_snmp.dll
  extension=php_soap.dll
  ;extension=php_sockets.dll
  ;extension=php_sqlite.dll
  ;extension=php_sybase_ct.dll
  ;extension=php_tidy.dll
  ;extension=php_xmlrpc.dll
  ;extension=php_xsl.dll
  ;extension=php_zip.dll
  </code></pre>
  
  <p>Also the phpinfo loading the right php.ini file. It was working earlier but suddenly start to give the error. I also checked the Apche error log but didn't find any clue.</p>
  
  <p>Please suggest.</p>