<?php
$conn = new mysqli("localhost","gtstudent", "", "concentrate");
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
if (array_key_exists("diff", $_REQUEST)) {
    $hard = $_REQUEST["diff"];
} else {
    $hard=1; 
}
$q = "select * from boards";
//echo $q . "\n";
$result = $conn->query($q);

$arr = array();
$count=0;
while ($row = $result->fetch_assoc()) {
    $arr[$count++]= $row;
}
 
$myJSON = json_encode($arr);
echo $myJSON;

?>