PHP mysqli query to check if a row exist [duplicate]

Answer 1

Try with this:

if ($stmt = $mysqli->prepare("SELECT COUNT(*) FROM TABLE WHERE columnA=? && columnB=?")) {
    $stmt->bind_param("ss", $a, $b);
    $stmt->execute();
    $stmt->bind_result($count);
    $stmt->fetch();
    $stmt->close();
}

return ($count > 0 ? true : false);

Now you should be able to get it done