ADODB + php不会在Oracle中存储西班牙语字符

I am using Spanish characters in my application. Currently I am storing Spanish accents like this in to database

 é í ó útestestet 

If I am using query from database like this

UPDATE indi_cmi_unidad
    SET 
        nombre='Oscar:Oscar: Oscar:    é í ó ú',
        factor='0',
        indi_unidad_base='',
        abreviatura='tc'
    WHERE idunidad='3'

Then it is Okey it will save this characters

But when I am passing this query from ADODB + PHP, then it is reflecting special character in database like,

I tried a lot I also put this query in my constructor class of adodb

$sql = "ALTER SESSION SET NSL_CHARACTERSET = 'US7ASCII'";

But not getting any result. Please help me

Thanks & Regards

Do you set the correct charset on the connection to the database ?

http://www.php.net//manual/es/function.oci-connect.php

Check the character_set parameter.

Something like this should work:

$connection = oci_connect(DB_USER, DB_PASS, DB_CONN_STRING, 'WE8ISO8859P15');
                                                            ^^^^^^^^^^^^^^^