function [function name]()
{
    global $DB;
    $query = "SELECT * FROM [table name] WHERE :valueName = $varName";
    $statement = $DB -> prepare($query);
    $statement -> bindValue(':valueName',$varName);
    $statement -> execute();
    $status = $statement -> rowCount();
    $statement -> closeCursor();

    return $status;

#   $error = $statement -> errorCode();
}