PHP und MySQL Transactions

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Kann das wirklich sein das PHP 5.2.5 weder mysqli noch mysql mit Transaction klar kommt? Dieser Syntax funktioniert bei mir auf der Konsole und in einem C Script einwandfrei. Aber bei PHP streiken beide Extensions. mysql spukt mir die untere Fehlermeldung aus und mysqli macht gar nichts

START TRANSACTION;
SELECT @lng:=IF( STRCMP(`main_lang`,'de'), 'en', 'de' )
FROM `hjcms_main_data` WHERE  ( `main_activ` LIKE 1 ) ORDER BY `main_id` ASC;
SELECT `main_id`, `main_type`, `main_title`, `main_body`, `main_modified`, `main_posted`
FROM `hjcms_main_data`
WHERE ( `main_type` RLIKE "news|about" AND `main_lang` LIKE @lng AND `main_activ` LIKE 1 )
ORDER BY `main_type` ASC;
COMMIT;

$QUERY = <<<EOT
START TRANSACTION;
SELECT @lng:=IF( STRCMP(`main_lang`,'de'), 'en', 'de' )
FROM `hjcms_main_data` WHERE  ( `main_activ` LIKE 1 ) ORDER BY `main_id` ASC;
SELECT `main_id`, `main_type`, `main_title`, `main_body`, `main_modified`, `main_posted`
FROM `hjcms_main_data`
WHERE ( `main_type` RLIKE "news|about" AND `main_lang` LIKE @lng AND `main_activ` LIKE 1 )
ORDER BY `main_type` ASC;
COMMIT;
EOT;

$result = mysql_query( $QUERY, $con ) or die( mysql_errno( $con ) );

if( $result )
{
  while( $row = mysql_fetch_assoc( $result ) )
  {
    foreach( $row AS $k => $v )
    {
      var_dump( $k, $v );
    }
  }
  mysql_free_result( $result );
} 

Warning: mysql_query() [http://www.mysql.com/doc]: Fehler in der SQL-Syntax. Bitte die korrekte Syntax im Handbuch nachschlagen bei ';
SELECT @lng:=IF( STRCMP(`main_lang`,'de'), 'en', 'de' )
FROM `hjcms_main_data`' in Zeile 1 in $HOME/public_html/transactiontest.php on line 17

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Tja man sollte die Docu doch mal etwas besser lesen
Hier die Lösung:

<?php

$mysqli  = mysqli_connect( "localhost", "owner", "pass", "db", 3306, "/var/lib/mysql/mysql.sock" );

$QUERY = <<<EOT
START TRANSACTION;
SELECT @lng:=IF( STRCMP(`main_lang`,'de'), 'en', 'de' )
FROM `main_data` WHERE  ( `main_activ` LIKE 1 ) ORDER BY `main_id` ASC;
SELECT `main_id`, `main_type`, `main_title`, `main_body`, `main_modified`, `main_posted`
FROM `main_data`
WHERE ( `main_type` RLIKE "news|about" AND `main_lang` LIKE @lng AND `main_activ` LIKE 1 )
ORDER BY `main_type` ASC;
COMMIT;
EOT;

$query = mysqli_multi_query( $mysqli, $QUERY ) or die( mysqli_error( $mysqli ) );

if( $query )
{
  do {
    if( $result = mysqli_store_result( $mysqli ) )
    {
      $subresult = mysqli_fetch_assoc( $result );
      if( ! isset( $subresult['main_id'] ) )
        continue;

      foreach( $subresult AS $k => $v )
      {
        var_dump( $k , $v );
      }
    }
  } while ( mysqli_next_result( $mysqli ) );
}

mysqli_close( $mysqli );

?>