multiple upload file issue in codeigniter - php

Question

I have created an add file upload function and multiple file upload function.
Add function is working fine, but Edit function is not working.
After submitting the EDIT form, the OLD VALUES are not saved in the database.
The file is saved in some other folder.
Kindly help.
this is my code:controller file:
if(isset($_POST['additionalimage_exists']) && $_POST['additionalimage_exists'] != ''){
$temp_image = $_POST['additionalimage_exists'];
//echo $temp_image;die;
if(isset($_FILES['additional_images']['name']) && $_FILES['additional_images']['name'] != ""){
$errors= array();
$additional_eventimages = $_FILES['additional_images']['name'];
foreach($_FILES['additional_images']['name'] as $key => $tmpName) {
$additionalimages = $_FILES['additional_images']['name'][$key];
$file_type = $_FILES['additional_images']['type'][$key];
$file_size = $_FILES['additional_images']['size'][$key];
$file_tmp = $_FILES['additional_images']['tmp_name'][$key];
move_uploaded_file($file_tmp,"images/events/".$additionalimages);
}
}
else
{
$additional_eventimages = $temp_image;
}
}
view File:
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label for="additional-image">Additional Images</label>
<input type="file" class="form-control" name="additional_images[]" value="<?php echo $additional_images;?>" multiple="multiple">
<input type="hidden" name="additionalimage_exists" value="<?php echo $additional_images;?>" class="form-control-file" id="exampleInputFile" placeholder="Enter Image Text" aria-describedby="fileHelp">
<div>
<?php echo $additional_images;?>
</div>
</div>
</div>
</div>

Answer 1

Try with this code.
if(isset($_FILES['additional_images']['name']) && $_FILES['additional_images']['name'] != ""){
$errors= array();
$additional_eventimages = $_FILES['additional_images']['name'];
foreach($_FILES['additional_images']['name'] as $key => $tmpName) {
$additionalimages = $_FILES['additional_images']['name'][$key];
$file_type = $_FILES['additional_images']['type'][$key];
$file_size = $_FILES['additional_images']['size'][$key];
$file_tmp = $_FILES['additional_images']['tmp_name'][$key];
move_uploaded_file($file_tmp,"images/events/".$additionalimages);
} else if(isset($_POST['additionalimage_exists']) && $_POST['additionalimage_exists'] != ''){
$additional_eventimages = $_POST['additionalimage_exists'];
} else {
$additional_eventimages = "";
}