[PHP] binding adodb

[Raúl Castro Marín]

I got a little question, I just start to use binding adodb but I got a problem: 
my primary query on Oracle is:

$query = "SELECT munici_mun, UPPER(nombre_mun) 
FROM MUNI 
WHERE departa_dpt = ? AND 
munici_mun <= 994";

It is execute with any problem, but when I add another clause with keyword:

AND UPPER(nombre_mun) LIKE '%?%'   then next sentence is execute but no record 
is returned
$query = "SELECT munici_mun, UPPER(nombre_mun) 
FROM MUNI 
WHERE departa_dpt = ? 
AND munici_mun <= 994 
AND UPPER(nombre_mun) LIKE '%?%' 

I think that adodbd doesn't parse "?" like a variable on clause LIKE '%?%'. 
What can I do to write this sentence correctly?

thanks for your help!