Don't know what's wrong, help me at home and see what's going on here.

High-intensity in the local PHP5.3.3 environment to finish a website program.

Local testing is not a problem at all. Uploaded to the server. The problem is out. The server is also 5.3

I have written a simple class of my own
Class db{
function sql ($sql = ') {
Global $conn;
$query = mysql_query ($sql);
$rs = Mysql_fetch_array ($query); This is 13 lines.
return $rs;
Mysql_free_result ($query);
}
}
$DB =new DB;

There are no local errors. Upload the server on the error AH.
PHP Warning:mysql_fetch_array () expects parameter 1 to BES resource, boolean given in on line 13

Line 13th

Reply to discussion (solution)

12 rows
$query = mysql_query ($sql) or Die (Mysql_error ());

Just look.

Problem with the parameters?

Global $conn;
Database connection There might be a problem.

