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Got a bit of PHP code I'm struggling with - had a search around Google etc. and tried everything mentioned, but for some reason I'm having trouble solving it. The problem is: I have some code that is querying a database for the presence of a particular user. The code (it's a method inside a class) <?php global $mysqli; // Query specified database for value $q = 'SELECT id FROM ' . $database . ' WHERE username = \'' . $username . '\''; $r = $mysqli->query($q); var_dump($r); if ($r->num_rows) { // If row found username exists so return false return false; } ... ?> I've var dumped the result of the query ($r) and got this: object(mysqli_result)#4 (5) { ["current_field"]=> int(0) ["field_count"]=> int(1) ["lengths"]=> NULL ["num_rows"]=> int(1) ["type"]=> int(0) } This is correct, there should only be 1 row as above. I do get this error linking to the line saying if ($r->num_rows) { Notice: Trying to get property of non-object in FILE on line LINE but I don't know why since the object is valid (as above) and it should be working fine. From what I can tell it seems to be going through alright, I'm just wondering why there's an error. I'm sure it's something simple but I'd appreciate any help.

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