date (d-m-Y)

Hi,

I use php to insert date in my database :
$save = date("d-m-Y");

After this insert, I select it to see if all is ok, but the date is now
("m-d-Y")...
I do a : SET DATESTYLE TO 'European' - but my php page show again :
m-d-Y.
And if I quit psql - my database return to US.

How could I fix that?

Patrick