Unicode in php oracle

Question

While using multilanguage in php/oracle iam facing some issues
i gave input as : Portuguese: O próximo vôo à
and got output as : Portuguese: O pr?ximo v?o ?
for some special characters it is replaced by '?' mark.
iam using php5 and orcle 9 and OCI for connecting.
i gave NLS_CHARACTERSET as UTF8
and the unicode datatype as NVARCHAR2(100)
Plz some one help me out in solving it

Answer 1

hi..
using alter session in php i changed my nsl_lang to PORTUGUESE
but still the data is stored in ? for some special characers
Array
[PARAMETER] => Array
[0] => NLS_LANGUAGE
[1] => NLS_TERRITORY
[2] => NLS_CURRENCY
[3] => NLS_ISO_CURRENCY
[4] => NLS_NUMERIC_CHARACTERS
[5] => NLS_CALENDAR
[6] => NLS_DATE_FORMAT
[7] => NLS_DATE_LANGUAGE
[8] => NLS_CHARACTERSET
[9] => NLS_SORT
[10] => NLS_TIME_FORMAT
[11] => NLS_TIMESTAMP_FORMAT
[12] => NLS_TIME_TZ_FORMAT
[13] => NLS_TIMESTAMP_TZ_FORMAT
[14] => NLS_DUAL_CURRENCY
[15] => NLS_NCHAR_CHARACTERSET
[16] => NLS_COMP
[17] => NLS_LENGTH_SEMANTICS
[18] => NLS_NCHAR_CONV_EXCP
[VALUE] => Array
[0] => PORTUGUESE
[1] => AMERICA
[2] => $
[3] => AMERICA
[4] => .,
[5] => GREGORIAN
[6] => DD-MON-RR
[7] => PORTUGUESE
[8] => UTF8
[9] => WEST_EUROPEAN
[10] => HH.MI.SSXFF AM
[11] => DD-MON-RR HH.MI.SSXFF AM
[12] => HH.MI.SSXFF AM TZR
[13] => DD-MON-RR HH.MI.SSXFF AM TZR
[14] => $
[15] => AL16UTF16
[16] => BINARY
[17] => BYTE
[18] => FALSE
Input i gave : próximo vôo à
out put : pr??ximo v??o ??