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Php code for upload and download using progress bar

Php code for upload and download using progress bar
Sent by Copilot:

Upload File



``` ### 2. PHP Script for Upload Create an `upload.php` file with the following content: ```php ``` ### 3. HTML for Download Add the following code to your `index.html` file to create a download link: ```html

Download File

Download example.txt ``` ### 4. PHP Script for Download Create a `download.php` file with the following content: ```php ``` ### Explanation 1. **HTML Form**: The form allows users to select a file and submit it. The progress bar is updated using JavaScript and AJAX. 2. **PHP Upload Script**: This script handles the file upload and moves the uploaded file to the `uploads` directory. 3. **Download Link**: Provides a link to download a specific file. 4. **PHP Download Script**: This script handles the file download by setting the appropriate headers and reading the file. This setup should give you a basic file upload and download system with a progress bar. If you need more advanced features or customization, you can refer to detailed tutorials like those on CodeShack[^1^] and CodexWorld[^3^]. Feel free to ask if you have any questions or need further assistance! 😊" style="display: flex; flex-direction: column; user-select: text; word-break: break-word; min-height: var(--cib-type-body2-line-height); font-size: var(--cib-type-body2-font-size); line-height: var(--cib-type-body2-line-height); font-weight: var(--cib-type-body2-font-weight); font-variation-settings: var(--cib-type-body2-font-variation-settings); position: relative;">

Sure! Here’s a basic example of how you can implement file upload and download with a progress bar using PHP, JavaScript, and AJAX.

1. HTML Form for Upload

Create an index.html file with the following content:

Upload File



" style="position: relative; display: block; border: 1px solid var(--cib-color-stroke-neutral-primary); border-radius: var(--cib-border-radius-large); clear: both; margin-top: 12px; margin-block: 24px 12px;">
HTML
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>File Upload with Progress Bar</title>
    <style>
        #progress-bar {
            width: 0;
            height: 20px;
            background-color: green;
        }
    </style>
</head>
<body>
    <h2>Upload File</h2>
    <form id="uploadForm" enctype="multipart/form-data">
        <input type="file" name="file" id="file"><br><br>
        <input type="submit" value="Upload">
    </form>
    <div id="progress-container">
        <div id="progress-bar"></div>
    </div>
    <div id="uploadStatus"></div>

    <script>
        document.getElementById('uploadForm').onsubmit = function(event) {
            event.preventDefault();
            var formData = new FormData(this);
            var xhr = new XMLHttpRequest();
            xhr.open('POST', 'upload.php', true);

            xhr.upload.onprogress = function(event) {
                if (event.lengthComputable) {
                    var percentComplete = (event.loaded / event.total) * 100;
                    document.getElementById('progress-bar').style.width = percentComplete + '%';
                }
            };

            xhr.onload = function( ) {
                if (xhr.status == 200) {
                    document.getElementById('uploadStatus').innerHTML = 'File uploaded successfully!';
                } else {
                    document.getElementById('uploadStatus').innerHTML = 'File upload failed!';
                }
            };

            xhr.send(formData);
        };
    </script>
</body>
</html>

2. PHP Script for Upload

Create an upload.php file with the following content:

PHP
<?php
if ($_FILES['file']['name']) {
    $filename = $_FILES['file']['name'];
    $location = 'uploads/' . $filename;
    if (move_uploaded_file($_FILES['file']['tmp_name'], $location)) {
        echo 'File uploaded successfully!';
    } else {
        echo 'File upload failed!';
    }
}
?>

3. HTML for Download

Add the following code to your index.html file to create a download link:

Download example.txt " style="position: relative; display: block; border: 1px solid var(--cib-color-stroke-neutral-primary); border-radius: var(--cib-border-radius-large); clear: both; margin-top: 12px; margin-block: 24px 12px;">
HTML
<h2>Download File</h2>
<a href="download.php?file=example.txt">Download example.txt</a>

4. PHP Script for Download

Create a download.php file with the following content:

PHP
<?php
if (isset($_GET['file'])) {
    $file = 'uploads/' . $_GET['file'];

    if (file_exists($file)) {
        header('Content-Description: File Transfer');
        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename=' . basename($file));
        header('Expires: 0');
        header('Cache-Control: must-revalidate');
        header('Pragma: public');
        header('Content-Length: ' . filesize($file));
        readfile($file);
        exit;
    } else {
        echo 'File not found!';
    }
}
?>

Explanation

  1. HTML Form: The form allows users to select a file and submit it. The progress bar is updated using JavaScript and AJAX.
  2. PHP Upload Script: This script handles the file upload and moves the uploaded file to the uploads directory.
  3. Download Link: Provides a link to download a specific file.
  4. PHP Download Script: This script handles the file download by setting the appropriate headers and reading the file.

This setup should give you a basic file upload and download system with a progress bar. If you need more advanced features or customization, you can refer to detailed tutorials like those on CodeShack1 and CodexWorld2.

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