(PECL paradox >= 1.1.0)
px_set_value — Sets a value
$pxdoc
   , string $name
   , float $value
   )Sets various values.
pxdocResource identifier of the paradox database as returned by px_new().
name
       name can be one of the following.
The number of primary keys. Paradox databases always use the first numprimkeys fields for the primary index.
value
Возвращает TRUE в случае успешного завершения  или FALSE в случае возникновения ошибки.
px_set_parameter() - Sets a parameter