Upload multiple images in php - php

Question

i am creating a page called events i have created a form which submits on post file, this is my form code, `
Adding Staff
<div class="box">
<label>Heading</label>
<input type="text" name="heading" id="heading"/>
</div>
<div class="box" style="margin-left: 120px">
<label>Description 1</label>
<textarea cols="30" rows="5" name="description_1" id="description_1"></textarea>
</div>
<div class="box">
<label>Description 2</label>
<textarea cols="30" rows="5" name="description_2" id="description_2"></textarea>
</div>
<div class="clear"> </div>
<div class="box">
<label>Upload Images</label>
<input type="file" name="picture" id="picture"/>
<label>Is Rename <input type="checkbox" name="is_rename"> </label>
</div>
<div class="clear"> </div>
<div class="box" style="width: 100px; margin-left: 350px;">
<input style="padding: 4px" type="submit" name="submit" value="submit">
</div>`
This is my post
<?php
ob_start();
session_start();
include_once "../../classes/addClasses.php";
$heading = $_POST['heading'];
$description_1 = $_POST['description_1'];
$description_2 = $_POST['description_2'];
$picture = $_POST['picture'];
$target_dir = "../../../uploads/";
$target_file = $target_dir . basename($_FILES["picture"]["name"]);
print_r($_FILES);
if( isset( $_POST['is_rename'] ) )
$file_name = time().'-'.basename($_FILES["picture"]["name"]);
else
$file_name = basename($_FILES["picture"]["name"]);
if(empty($_FILES['picture']['name'])){
echo "please select a file to upload";
?>
<script>window.location.href="http://localhost/learner-pack/admin/admin/add_events.php?error=empty"</script>
<?php
}
$target_file = $target_dir . $file_name;
if (move_uploaded_file($_FILES["picture"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["picture"]["name"]). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
if (file_exists($target_file)) {
echo "Sorry, file '".$file_name."' already exists.";
}elseif (move_uploaded_file($_FILES["picture"]["tmp_name"], $target_file)) {
echo "The file " . $file_name . " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
/*$created_by = $_POST['created_by'];
$updated_by = $_POST['updated_by'];
$current_date = $_POST['current_date'];
$updated_date = $_POST['updated_date'];
$visitor_counter = $_POST['visitor_counter'];*/
if($admin->addingEvents($heading,$description_1,$description_2, $file_name))
{
header('Location: ../view_events.php?added=true');
}
else
{
echo "Error";
}
?>
please help me to store multiple images in table using one field and retireve them to view on events page when i fetch one row so that all images on that row are fetchable