Image Removed while updating other record in php mysqli - php

Question

While updating the record if I do not upload the image and click on update button the current image will be removed.
Here is the code
<?php
if (isset($_POST['update_record'])){
$edit_id = $_GET['edit'];
$username = $_POST['name'];
$email = $_POST['email'];
$city = $_POST['city'];
$file_name = $_FILES['file']['name'];
$file_tmp_name = $_FILES['file']['tmp_name'];
$file_error = $_FILES['file']['error'];
$file_size = $_FILES['file']['size'];
$file_type = $_FILES['file']['type'];
$allowed = ['png' , 'jpg' , 'jpeg'];
$pathinfo = pathinfo($file_name , PATHINFO_EXTENSION);
$destination = "uploads/" . $file_name ;
if (in_array($pathinfo , $allowed)){
if ($file_size < 100000){
if ($file_error === 0){
move_uploaded_file($file_tmp_name, $destination) ;
} //error close here
else{
echo "Some kind of error";
}
} //size close here
else{
echo "File Size is too big!";
}
} //type close here
else{
echo "File type is wronng";
}
$update_query = "UPDATE crud
SET `name`='$username' , `email`='$email' ,
`city`='$city', `image`='$destination'
WHERE id=$edit_id";
$run = mysqli_query($connect, $update_query) ;
if ($run){
header("Location: show_record.php") ;
} else{
echo "Error in Updating the data";
}
} //main if isset close here
?>

Answer 1

verify that a file exists before proceeding. if no file exist, then DO NOT update the $destination in your update query
//use a flag
$fileExists = false;
if(!empty($_FILES['file'])) { //check here
$fileExists = true;
//rest of the file upload code
}
if($fileExists === true){
// a file was uploaded. now update $destination variable in update query as well
}