Undefined ORACLE_HOME In Ubuntu Possibly Due To Locales

I installed Oracle via aptitude on Ubuntu.

Everytime I try to access a PHP script with Oracle on it, I get this message:

Quote:

Warning: oci_connect() [function.oci-connect]: OCIEnvNlsCreate() failed. There is something wrong with your system - please check that ORACLE_HOME is set and points to the right directory in /path/to/file.php on line 215

This was on PHP 5.

In my attempts to resolve this problem, here is what I did.

I tried the following with oracle-xe running and while it had been stopped:

Code:
$ . /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh

and I saw this message:

Quote:

/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/nls_lang.sh: 114: [[: not found
/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/nls_lang.sh: 114: [[: not found

and here is /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/nls_lang.sh:

Code:
103 # Detertmine the LANGUAGE_TERRITORY part of NLS_LANG
104 # we derive it from the current locale by inspecting the LC_ALL and
105 # the LANG environment variable. Other LC_* environment variables
106 # are not inspected.
107 #
108 if [[ -n "$LC_ALL" ]]; then
109 locale=$LC_ALL
110 elif [[ -n "$LANG" ]]; then
111 locale=$LANG
112 else
113 locale=
114 fi

I then opened /etc/bash.bashrc and
tried adding this to the bottom:

Code:
LC_ALL='en_GB'
export LC_ALL
and sourced it but that did not work so I replaced it with this:

Code:
LC_ALL='C'
export LC_ALL
and sourced it but still no luck.

Does anyone know how I could sort this out?