John Davidson

Message:

i am running a localhost project. i'm uploading image and some text into localhost phpmysql server. the image file save into images folder. when i upload a image called 1.png its save on the folder as a same name. like this - images/1.png.

what i want - is it possible to change automatically the image file name to a unique one? Like this - images/1.png into images/sgaggjhdzfndzfnd1.png

<?php 

    session_start(); 



    if (!isset($_SESSION['username'])) {

        $_SESSION['msg'] = "You must log in first";

        header('location: login.php');

    }



    if (isset($_GET['logout'])) {

        session_destroy();

        unset($_SESSION['username']);

        header("location: login.php");

    }





  // Create database connection

  include_once('db.php');



  // Initialize message variable

  $msg = "";



  // If upload button is clicked ...

  if (isset($_POST['upload'])) {

    // Get image name

    $image = $_FILES['image']['name'];

    // Get text

    $image_text = mysqli_real_escape_string($db, $_POST['image_text']);

    

    $text01 = mysqli_real_escape_string($db, $_POST['text01']);

    

    $text02 = mysqli_real_escape_string($db, $_POST['text02']);



    // image file directory

    $target = "images/".basename($image);



    $sql = "INSERT INTO images (image, image_text, text01, text02) VALUES ('$image', '$image_text', '$text01', '$text02')";

    // execute query

    mysqli_query($db, $sql);



    if (move_uploaded_file($_FILES['image']['tmp_name'], $target)) {

        $msg = "Image uploaded successfully";

    }else{

        $msg = "Failed to upload image";

    }

  }

  $result = mysqli_query($db, "SELECT * FROM images ORDER BY id DESC");

?>

---

My Answer:
To give the uploaded image file a unique filename, you can use the `uniqid()` function in PHP to generate a unique identifier and append it to the original filename before saving the file. Here's how you can modify your code to achieve this:

php
// If upload button is clicked ...
if (isset($_POST['upload'])) {
// Get image name
$image = $_FILES['image']['name'];
// Generate a unique identifier
$unique_id = uniqid();
// Get file extension
$image_extension = pathinfo($image, PATHINFO_EXTENSION);
// Create a unique filename
$new_image_name = $unique_id . '.' . $image_extension;
// Get text
$image_text = mysqli_real_escape_string($db, $_POST['image_text']);

$text01 = mysqli_real_escape_string($db, $_POST['text01']);

$text02 = mysqli_real_escape_string($db, $_POST['text02']);

// image file directory
$target = "images/" . $new_image_name;

$sql = "INSERT INTO images (image, image_text, text01, text02) VALUES ('$new_image_name', '$image_text', '$text01', '$text02')";
// execute query
mysqli_query($db, $sql);

if (move_uploaded_file($_FILES['image']['tmp_name'], $target)) {
$msg = "Image uploaded successfully";
} else {
$msg = "Failed to upload image";
}
}


In this code snippet, we generate a unique identifier using `uniqid()` and append it to the original filename before saving the file. This ensures that each uploaded image will have a unique filename in the `images` folder.