private static function prepareStatement(array $where): array
    {
        $keys = array_keys($where);
        foreach ($keys as &$key) {
            $key = DbProxy::quoteIdentifier($key) . ' = ?';
        }
        return $keys;
    }
private static function prepareStatement(array $where): array
    {
        $keys = array_keys($where);
        foreach ($keys as &$key) {
            $key = DbProxy::quoteIdentifier($key) . ' = ?';
        }
        return $keys;
    }
private static function prepareStatement ( array $ where ) : array { $ keys = array_keys ( $ where ) ; foreach ( $ keys as & $ key ) { $ key = DbProxy :: quoteIdentifier ( $ key ) . ' = ?' ; } return $ keys ; }
Prepare array for WHERE or SET statements

@param  array $where

@return array
Prepare array for WHERE or SET statements