retrieving images stored by php / pgsql

Hallo,

I have stored images (gif, jpeg, png and others) in a bytea column
using pg_escape_bytea ( file_get_contents (...)).

Now I would like to retrieve (and show) these images, but using
unixODBC.  I have no problem retrieving them using pgsql, but the
images are damaged when I try to do it with odbc.

What would be the correct way, if it is at all possible?

Thanks,

Gerard