NULL

<?php
include('database.php');
    $searchByOrder = $_REQUEST["SubjectNamePostsOrderBy"];
	if($searchBy = $conn->prepare("SELECT * FROM PostData WHERE SubjectName LIKE ? ORDER BY " . $searchByOrder . "")) {
	$searchLikeBy =  "%" . $_REQUEST["SubjectNamePostsLike"] . "%";
	$searchBy->bind_param('s', $searchLikeBy);
    $searchBy->execute();
    $searchBy->bind_result($Id, $UserName, $SubjectName, $PostDataPost, $MainImage, $DatePosted, $PostViews, $UpVoted, $DownVoted);
    while($searchBy->fetch()) {
    echo "<pre style=\"background-color: #fafafa; border-left: 3px solid #333;\"><a href=\"?SubjectName=" . $SubjectName . "\"><h3>" . $SubjectName . "</h3></a><p style=\"font-size: 13px; display: inline; color: #9197a3;\">User Posted: " . $UserName . " </p><p style=\"font-size: 13px; display: inline; color: #9197a3;\">Date Posted: " .  $DatePosted . " </p><div id=\"descArea\"><br>" . $PostDataPost . "</div><br>" . "<img src=\"" . $MainImage . "\" style=\"max-width: 500px; max-height: 500px;\"></img><img src=\"DownVoted-Icon.png\" width=\"30\" height=\"30\"></img> " . $DownVoted . "<br><div style=\"font-size: 13px; display: inline; color: #9197a3;\">Views: " . $PostViews . "</div></pre><p style=\"border: 1px solid transparent; border-bottom: 1px solid black; \"></p>";
	}
    } else {
    echo "Problem Loading Index Post Data! Error: " . $conn->error;
    }
?>