Install php5 oracle 11g x64 ora_logon() ISSUE

Hi everyone

I have a Oracle database Release 11.1.0.6.0 x64 an Red Hat 5.2 x64
running perfectly and i need to install php with oracle connectivity in
the same machine. After follow diferentes guides (even mixed) always get
the same error "Call to undefined function ora_logon()"
In orden to get help from you I will explain the steps i made in the
configuration:

1) environments variables

In /etc/bashrc include this lines
export ORACLE_BASE=/opt/oracle
export ORACLE_HOME=$ORACLE_BASE/11.1.0/db_1
export ORACLE_SID=lpz1
export ORACLE_TERM=xterm
export PATH=$PATH:$ORACLE_HOME/bin

2) Download and install the source of php in new session
#rpm -i php-5.1.6-20.el5.src.rpm
#cd /usr/src/redhat/SOURCES/
#tar -zxvf php-5.1.6.tar.gz
#cd php-5.1.6
#./configure --with-apxs2=/usr/sbin/apxs --prefix=$ORACLE_HOME
--enable-track-vars --with-oci8=shared,$ORACLE_HOME  --with-gd
--enable-sigchild --with-zlib --disable-rpath
--with-config-file-path=/etc/httpd/conf --with-oracle=$ORACLE_HOME
#make
#make install (show output)

Installing PHP SAPI module:       apache2handler
/usr/lib64/httpd/build/instdso.sh
SH_LIBTOOL='/usr/lib64/apr-1/build/libtool'
libphp5.la /usr/lib64/httpd/modules
/usr/lib64/apr-1/build/libtool --mode=install cp
libphp5.la /usr/lib64/httpd/modules/
cp .libs/libphp5.so /usr/lib64/httpd/modules/libphp5.so
cp .libs/libphp5.lai /usr/lib64/httpd/modules/libphp5.la
libtool: install: warning: remember to run `libtool
--finish /usr/src/redhat/SOURCES/php-5.1.6/libs'
chmod 755 /usr/lib64/httpd/modules/libphp5.so
[activating module `php5' in /etc/httpd/conf/httpd.conf]
Installing PHP CLI binary:        /opt/oracle/11.1.0/db_1/bin/
Installing PHP CLI man page:      /opt/oracle/11.1.0/db_1/man/man1/
Installing shared
extensions:     /opt/oracle/11.1.0/db_1/lib/php/extensions/no-debug-non-zts-20050922/
Installing build environment:     /opt/oracle/11.1.0/db_1/lib/php/build/
Installing header files:          /opt/oracle/11.1.0/db_1/include/php/
Installing helper programs:       /opt/oracle/11.1.0/db_1/bin/
  program: phpize
  program: php-config
Installing man pages:             /opt/oracle/11.1.0/db_1/man/man1/
  page: phpize.1
  page: php-config.1
Installing PEAR environment:      /opt/oracle/11.1.0/db_1/lib/php/
[PEAR] Archive_Tar    - already installed: 1.3.1
[PEAR] Console_Getopt - already installed: 1.2
[PEAR] PEAR           - already installed: 1.4.9
Wrote PEAR system config file at: /opt/oracle/11.1.0/db_1/etc/pear.conf
You may want to add: /opt/oracle/11.1.0/db_1/lib/php to your php.ini
include_path
Installing PDO
headers:          /opt/oracle/11.1.0/db_1/include/php/ext/pdo/

3)Final touches
#cp php.ini-dist /etc/php.ini
follow the output instructions in php.ini
include_path = ".:/opt/oracle/11.1.0/db_1/lib/php
#libtool --finish /usr/src/redhat/SOURCES/php-5.1.6/libs

4) in /etc/httpd/conf/httpd.conf
AddType application/x-httpd-php .php .phtml

5) Finally
#service httpd restart
go to the php page end i get 
Fatal error: Call to undefined function ora_logon()
in /path/to/file/index.php on line 11

I hope you can help me

Cheers
Fabricio