PHP mysql bug query -

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hi guys i've been working straight 12 hours, can't seem find fix. i'm trying compare user-input database result example $username == $result echo "username aldready taken, problem it's passing through 2 statements without break, , if put break exit loop, check $email == $result2 despite of not entering email in field.

if (isset($_post['username']) or isset($_post['email'])) {     $extract = mysql_query("         select           `username`, `email`         `users`         `username`='$username' or `email`='$email'     ");      $resultq = mysql_num_rows($extract);     while ($row = mysql_fetch_array($extract)) {          $result = $row['username'];         $result2 = $row['email'];          echo " " . $result;         echo " " . $result2;          if ($username == $result) {             echo " username taken!";             //  break; //whenever put break, gives me else if statement echo, despite not entering email in field         } //$pass = $_post['pass'];         else if ($email == $result2) {             echo "email address used!";             //  break;         } else {         }     } }

upgrade mysql either mysqli, or pdo.

however;

$extract= mysql_query("select username, email users username='$username' or email='$email'");  $resultq = mysql_num_rows($extract);     if($resultq > 0) {        echo 'either username, or email taken!';        return;     }

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