PHP + MySql，或带有多个错误检查的查询

Question

Currently I have to use 2 queries to check if database allready contains email or ip.

My code now:

        $link = $db->prepare("SELECT * FROM users WHERE email=?");
        if($link->execute(array($login))){
            if($link->rowCount() > 0){
                $errmsg_arr[] = 'Email is already in use';
                $errflag = true;
            }
        }

        $link = $db->prepare("SELECT * FROM users WHERE Ip=?");
        if($link->execute(array($ip))){
            if($link->rowCount() > 0){
                $errmsg_arr[] = 'There is allready account registered with this IP address';
                $errflag = true;
            }
        }

Is there way to check if email or IP is allready used if I use this query and how to do it?

$link = $db->prepare("SELECT * FROM users WHERE email=? OR Ip=?");

EDIT: To be clear, I want to give 2 different errors, not one that tells user "Email or IP is allready in use"

    if($link->execute(array($login, $ip))){
        // WHAT HERE?
        // CHECK IF EMAIL IS ON USE
        $errmsg_arr[] = 'Email is already in use';

        //CHECK IF IP IS USED
        $errmsg_arr[] = 'There is allready account registered with this IP address';

        $errflag = true;
    }

So, is this possible with just 1 query?

I want to minimize use of queries.

Thanks

Answer 1

Try this: (and since you use prepare() and execute, read here ):

$link = $db->prepare("SELECT * FROM users WHERE email=? OR Ip=?");
if($link->execute(array($email, $ip))){
        if($link->rowCount() > 0){
            $errmsg_arr[] = 'Email or IP is already in use';
            $errflag = true;
        }
    }