jQuery AJAX mendapatkan data MySQL mengembalikan keseluruhan index.html

Identifikasi pertama, Anda menyebutkan tipe data sebagai "json", tetapi respons ajax Anda bukan json. Jadi Coba seperti ini,

<?php

//  Make DB connection variable($conn) available here
//variable from jQuery
$value = filter_var($_REQUEST["ajaxid"], FILTER_SANITIZE_STRING);
$value = mysqli_real_escape_string($conn, $value);

//variable passed to SQL statement
/*$sql = $conn->prepare("SELECT FROM table WHERE screeningId = ?");
$sql->bind_param("s",$value);*/
$sql = "SELECT * FROM table WHERE screeningId = '$value'";
$result = mysqli_query($db, $sql);

//Get data
$result = mysqli_query($db, $sql);
$temp = array();
while ($row = mysqli_fetch_array($result)){
    //output data
    array_push($temp,$row['url']);
}
echo json_encode($temp);
?>

Untuk tujuan debug, coba langsung jalankan get.php di browser dengan string kueri. Mis, http://...../../get .php?ajaxid=sample_value .