<?php
mysqli_report(MYSQLI_REPORT_ALL);
if (array_key_exists("diff", $_REQUEST)) {
    $hard = $_REQUEST["diff"];
} else { 
    $hard=1; 
}
$conn = new mysqli("localhost","gtstudent", "", "concentrate");
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$q = "select * from boards where difficulty=$hard;";
//echo $q . "\n";
$result = $conn->query($q);
if ($result->num_rows > 0) {
   $row = $result->fetch_assoc();
   $myJSON = json_encode($row);
   echo $myJSON;
}

?>