Using mssql.so PHP extension

I installed CSKamp, CSKphplibs and CSKtds packages

I added the following line to my php.ini

"extension "mssql.so"

But it looks like php doesn't that module functions:

[root@uspvlts02]-[~]$ cat php_mssql.php

<?php

$DBSERVER ='host';

$DBUSER ='user';

$DBPASS ='password';

$DB ='rda_content';

$cn = mssql_connect($DBSERVER, $DBUSER, $DBPASS);

mssql_select_db($DB, $cn);

$sp = mssql_query('select * from table');

$row = mssql_fetch_array($sp);

echo $row;

mssql_close($cn);

?>

[root@uspvlts02]-[~]$ /opt/coolstack/php5/bin/php ./php_mssql.php

Fatal error: Call to undefined function mssql_connect() in /home/fbousqu/php_mssql.php on line 8

[root@uspvlts02]-[~]$

What am I missing?

[953 byte] By [Francois.Bousqueta] at [2007-11-27 8:35:07]