File Explorer

<?php include("includes/css.php");?>
<body class="hold-transition skin-blue sidebar-mini">
	<div class="wrapper">
		<?php include("includes/header.php");?>
		<?php include("includes/sidebar.php");?>
		
		<div class="content-wrapper"> 
			
			<section class="content">
				<div class="row"> 
					<div class="col-md-12">
						<div class="box box-primary">
							<div class="box-header with-border">
									<div class="col-md-5">
										<h3 class="box-title">Student Details:</h3>  
									</div> 
									<div class="col-md-2 pull-right"><a href="add-student.php"><button class="btn btn-flat btn-custom2 btn-sm"><i class="fa fa-plus"></i> Add Student</button></a></div>
 <div class="col-md-2 pull-right"><a href="add-student-excel.php"><button class="btn btn-flat btn-custom2 btn-sm"><i class="fa fa-plus"></i> Upload Excel</button></a></div>
								
								</div>
								<div class="box-header with-border">
								 
								</div>
								
								<div class="box-body"> 
									<div class="table-responsive">
									<table class="table table-bordered example3">
										<thead>
											<tr>
												<th>S.No.</th> 
												<th>Student Name </th>
												<th>Query</th>
												<th>Answer Details</th>
												<th>Answer File</th>
											</tr>
										</thead>
										<tbody>
									<?php $idd=$_GET['id'];
									$sql=mysqli_query($conn,"select stud_assignment_answer.*,student.name from stud_assignment_answer join student on stud_assignment_answer.student_id=student.id where aid='".$idd."'");
									 $j=1;
									while($res= mysqli_fetch_array($sql)){ 	?>
										<tr>
											<td><?php echo $j; $j++; ?></td>
											<td><?php echo $res['name']; ?></td>
											<td><?php echo $res['query']; ?></td>
											<td><textarea style="height:80px;"><?php echo html_entity_decode($res['answer_data']);  ?></textarea></td>
                                            <td><a href="ag_pdf_download.php?file_id=<?php echo ($res['id']);  ?>"><button class="btn btn-md btn-success"><i class="fa fa-download"></i> Download</button></a></td>
											</tr><?php } ?>
										</tbody>
									</table>
								</div>
								
							</div>
						</div> 
					</div> 
				</div> 
			</section>
		</div>
		<?php include("includes/footer.php");?>
	</div>
	<?php include("includes/js.php");?>
	<script type="text/javascript">
function UpdateRecord(id){
    var status= $("#prod_status").val(); 
      $.ajax({
        type: "POST",
        url: "status_update.php",
        data: "id=" + id+ "&status=" + status,
        success: function(data) {
           alert("successfully Updated");
                 }
    });
     }

function delete_student_by_ID(id)
{
	if (confirm('Do You Want to Deleting This \nContinue anyway?')) {
		window.location.href = 'delete_student.php?id=' + id;
	}
}

</script>

</body>

</html>

Editing File: student-assignment-detail.php