How to update an image in sql using php - php

Question

I want to update or set a photo on specific user, when I tried to upload an image, the image is not uploaded on my folder "upload" and the name of the photo (which is a number but 0 e.g: 1.jpg) is inserted in database and the file extension is missing inside the database can someone help me with this
HERE IS MY CODE:
<?php
session_start();
include("../db_connection.php");
$seller_id = $_SESSION['seller_id'];
$trade_name = $_POST ['trade_name'];
$s_address = $_POST ['s_address'];
$opening_time = $_POST ['opening_time'];
$opening_days = $_POST ['opening_days'];
$order_cutoff = $_POST ['order_cutoff'];
$seller_delivery_time = $_POST ['seller_delivery_time'];
$area_covered_delivery = $_POST ['area_covered_delivery'];
$delivery_fee = $_POST ['delivery_fee'];
$extension = pathinfo($_FILES['s_image']['name'], PATHINFO_EXTENSION);
$sql = mysqli_query($db, "UPDATE selling_details
SET
opening_time = '$opening_time',
opening_days = '$opening_days',
order_cutoff = '$order_cutoff',
seller_delivery_time = '$seller_delivery_time',
area_covered_delivery = '$area_covered_delivery',
delivery_fee = '$delivery_fee'
WHERE seller_id= '" . $_SESSION['seller_id'] . "' ");
if ($sql)
{
$id = mysqli_insert_id($db);
$filename = $id.'.'.$extension;
if(move_uploaded_file($_FILES['s_image']['tmp_name'], 'upload/'.$filename))
{
}
else
{
echo "error occured : " . mysqli_error($db);
}
$sql2 = mysqli_query($db, "UPDATE seller
SET
trade_name = '$trade_name',
s_address = '$s_address',
s_image = '$filename'
WHERE seller_id= '" . $_SESSION['seller_id'] . "' ");
if ($sql2)
{
header('location: seller_menu.php');
}
else
{
echo "error occured : " . mysqli_error($db);
}
}
?>

Answer 1

Try like this... If your field is varchar means it will work. and you need to declare the variable using .[concodinate] operator. Not tested check and let me know.
$sql2 = mysqli_query($db, "UPDATE seller
SET
trade_name = '".$trade_name."',
s_address = '".$s_address."',
s_image = '".$filename."'
WHERE seller_id= '" . $_SESSION['seller_id'] . "' ");
Edited:
Try to change like this because if your file upload complete then save into your DB is correct way...In your code is run the second sql2 query if not file upload into the folder.
if ($sql) {
$id = mysqli_insert_id($db);
$filename = $id.'.'.$extension;
if(move_uploaded_file($_FILES['s_image']['tmp_name'], 'upload/'.$filename)) {
$sql2 = mysqli_query($db, "UPDATE seller
SET
trade_name = '".$trade_name."',
s_address = '".$s_address."',
s_image = '".$filename."'
WHERE seller_id= '" . $_SESSION['seller_id'] . "' ");
if ($sql2) {
header('location: seller_menu.php');
}else{
echo "error occured : " . mysqli_error($db);
}
}
} else {
echo "error occured : " . mysqli_error($db);
}

Answer 2

$upload_dir = "upload"; // The directory for the images to be saved in
$upload_path = $upload_dir."/";
$userfile_tmp = $_FILES['s_image'.$i]['tmp_name'];
$filename = basename($_FILES['s_image'.$i]['name']);
$file_Size = $_FILES['s_image']['size'];
$extension = strtolower(substr($filename, strrpos($filename, '.') + 1));
if (empty($extension)) {$error='No extension exist!';}
if(isset($_FILES['s_image']['name']) && $_FILES['s_image']['name']==true && $file_Size >0 && $error=='')
{
$filename = $id.'.'.$extension;
$new_image_location=$upload_path.$filename;
//chmod($new_image_location, 0777);
if(move_uploaded_file($userfile_tmp, $new_image_location))
{
$sql2 = mysqli_query($db, "UPDATE seller
SET
trade_name = '$trade_name',
s_address = '$s_address',
s_image = '$filename'
WHERE seller_id= '" . $_SESSION['seller_id'] . "' ");
}else{
echo 'upload folder permission required!!';
//chmod($new_image_location, 0777);
}
}