This report uses php 4.04 and the php_mssql70.dll extension on windows nt 4.
There seem to be a problem with the functions that accept a mssql_query() link identifier as parameter.

I have the followin basic script :

$hdb = mssql_connect( "testserver", "test", "testpwd" );
print( "hdb = $hdb<br>" );
print( "mssql_select_db : ".mssql_select_db( "test_db", $hdb )."<br>" );
$hcur = mssql_query( "select * from t_test", $hdb );
print( "hcur = $hcur<br>" );
print( "mssql_num_fields : ".mssql_num_fields( $hcur )."<br>" );
print( "mssql_num_rows : ".mssql_num_rows( $hcur )."<br>" );


which produces the following output :

hdb = Resource id #1
mssql_select_db : 1
hcur = 1
Warning: Supplied argument is not a valid MS SQL-result resource in c:\php\default.php4 on line 17
mssql_num_fields : 
Warning: Supplied argument is not a valid MS SQL-result resource in c:\php\default.php4 on line 18
mssql_num_rows :