The code:
$msr = db_query("SELECT * FROM users WHERE username='$username'");
if (db_num_rows($msr) == 0)
return null;
When
function db_query($query) { return mysql_query($query) or die(mysql_error() . " when querying: $query"); }
function db_num_rows($queres) { return mysql_num_rows($queres) or die(mysql_error()); }
Shows error: Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource
When I replace "db_" with "mysql_" everything works perfectly. Is there a way to fix this?