Description:
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I've been having some issues with mssql_connect. I'm trying to connect to an MS-SQL 2000 database from PHP on a Linux server running PHP 5.1.6, but the mssql_connect() function always gives me the same error message saying it can't connect to the server.

I also tried connecting to the same server from my local machine (Windows XP Pro, PHP 5.2.5) with the same results. However, I wrote a quick python script using pymssql and that worked fine from this machine. I also set up an ODBC connection on this machine and connected from PHP via odbc_connect(), which also worked fine. The mssql_connect() problems are the same whether mssql.secure_connection is set to Off or On in the php.ini

Reproduce code:
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$db = mssql_connect('hostname', 'username', 'password');

if(!$db) {
    die('<h2>Massive failure</h2>');
}

Expected result:
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Should connect to database not print any errors

Actual result:
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Warning: mssql_connect() [function.mssql-connect]: Unable to connect to server: host.name.of.server in /var/www/html/filename.php on line 28