// Мульти апдейт
$updSQL_query = array();
$updend_SQL = array();
$updSQL = "UPDATE $allskins  SET csmoney = CASE ";
foreach ( $upd_items as $item){
    $updSQL_query[] = "WHEN skinname = '". $item['skinName'] ."' THEN '". $item['skinCost'] ."'";
    $updend_SQL[]="'".$item['skinName']."'";

}
$updSQL .= implode(' ',$updSQL_query)." END WHERE skinname in (" . implode(',',$updend_SQL) . ")";
R::exec($updSQL);


// Мульти инсерт.
$insSQL_query = array();
$insSQL = "INSERT INTO $allskins ( skinname,csmoney,csmupd ) VALUES";
foreach ($insert_items as $item){
    $insSQL_query[] = "('".$item['skinName']."', '" . $item['skinCost'] . "', '$date')";
}
$insSQL .= implode(',',$insSQL_query);
R::exec($insSQL);