PHP cant connect to MySQL

Question

$link = mysql_connect(\'localhost\', $username, $password);
if (!$link) 
{
     die(\'Could not connect: \' . mysql_error());
}

I get this error:

Answer 1

From your edit, the issue appears to be a scoping one.

You're attempting to make a connection inside a function where the $username, $password and $database variables are defined outside that function.

I suggest you read the Variable Scope section of the manual and turn up your error reporting as @netcoder suggests in the question comments.