How to Upload Multiple Files with Progress Bar via Ajax and PHP

Enabling File Uploads in Web Apps: A Critical Component for Dynamic Functionality. Although PHP allows for file uploads, it frequently requires page refreshes. Using jQuery and Ajax, on the other hand, can create a seamless experience, allowing for user-friendly file/image uploads without reloads.

Create an HTML form with a file upload form.

First, create index.php and paste the below HTML

<div class="ath_container tile-container ">
    <div id="uploadStatus"></div>
    <h2 style="margin-bottom:10px">AJAX File Upload with Progress Bar using JavaScript</h2>
    <input type="file" id="fileUpload" multiple /> <!-- Add 'multiple' attribute for multiple file selection -->
    <br>
    <br>
    <button onclick="uploadFiles()">Upload</button> <!-- Change function name -->
    <div>
        <table id="progressBarsContainer">
            <!-- Table rows will be dynamically added here -->
        </table>
    </div> <!-- Container for progress bars -->
    <br>
</div>

Create CSS for styling:

call it in index.php in the header section

* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}



body {
    font-family: -apple-system, BlinkMacSystemFont, Roboto, Segoe UI,
        Helvetica Neue, Helvetica, Arial, sans-serif;
    margin: 0 auto;
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
    color: #2f2f2f;
    line-height: 1.5;
}

.ath_container {
    width: 740px;
    margin: 20px auto;
    padding: 0px 20px 0px 20px;
}

.ath_container {
    width: 820px;
    border: #d7d7d7 1px solid;
    border-radius: 5px;
    padding: 10px 20px 10px 20px;
    box-shadow: 0 0 5px rgba(0, 0, 0, .3);
    /* border-radius: 5px; */
}

#uploadStatus {
    color: #00e200;
}

.ath_container a {
    text-decoration: none;
    color: #2f20d1;
}

.ath_container a:hover {
    text-decoration: underline;
}

.ath_container img {
    height: auto;
    max-width: 100%;
    vertical-align: middle;
}


.ath_container .label {
    color: #565656;
    margin-bottom: 2px;
}



.ath_container .message {
    padding: 6px 20px;
    font-size: 1em;
    color: rgb(40, 40, 40);
    box-sizing: border-box;
    margin: 0px;
    border-radius: 3px;
    width: 100%;
    overflow: auto;
}

.ath_container .error {
    padding: 6px 20px;
    border-radius: 3px;
    background-color: #ffe7e7;
    border: 1px solid #e46b66;
    color: #dc0d24;
}

.ath_container .success {
    background-color: #48e0a4;
    border: #40cc94 1px solid;
    border-radius: 3px;
    color: #105b3d;
}

.ath_container .validation-message {
    color: #e20900;
}

.ath_container .font-bold {
    font-weight: bold;
}

.ath_container .display-none {
    display: none;
}

.ath_container .inline-block {
    display: inline-block;
}

.ath_container .float-right {
    float: right;
}

.ath_container .float-left {
    float: left;
}

.ath_container .text-center {
    text-align: center;
}

.ath_container .text-left {
    text-align: left;
}

.ath_container .text-right {
    text-align: right;
}

.ath_container .full-width {
    width: 100%;
}

.ath_container .cursor-pointer {
    cursor: pointer;
}

.ath_container .mr-20 {
    margin-right: 20px;
}

.ath_container .m-20 {
    margin: 20px;
}



.ath_container table {
    border-collapse: collapse;
    border-spacing: 0;
    width: 100%;
    border: 1px solid #ddd;
    margin-top: 20px;
}


.ath_container table th,
.ath_container table td {
    text-align: left;
    padding: 5px;
    border: 1px solid #ededed;
    width: 50%;
}

tr:nth-child(even) {
    background-color: #f2f2f2
}

.ath_container .progress {
    margin: 20px 0 0 0;
    width: 300px;
    border: 1px solid #ddd;
    padding: 5px;
    border-radius: 5px;
}

.ath_container .progress-bar {
    width: 0%;
    height: 24px;
    background-color: #4CAF50;
    margin-top: 15px;
    border-radius: 12px;
    text-align: center;
    color: #fff;
}

@media all and (max-width: 780px) {
    .ath_container {
        width: auto;
    }
}


.ath_container input,
.ath_container textarea,
.ath_container select {
    box-sizing: border-box;
    width: 200px;
    height: initial;
    padding: 8px 5px;
    border: 1px solid #9a9a9a;
    border-radius: 4px;
}

.ath_container input[type="checkbox"] {
    width: auto;
    vertical-align: text-bottom;
}

.ath_container textarea {
    width: 300px;
}

.ath_container select {
    display: initial;
    height: 30px;
    padding: 2px 5px;
}

.ath_container button,
.ath_container input[type=submit],
.ath_container input[type=button] {
    padding: 8px 30px;
    font-size: 1em;
    cursor: pointer;
    border-radius: 25px;
    color: #ffffff;
    background-color: #6213d3;
    border-color: #9554f1 #9172bd #4907a9;
}

.ath_container input[type=submit]:hover {
    background-color: #f7c027;
}

::placeholder {
    color: #bdbfc4;
}

.ath_container label {
    display: block;
    color: #565656;
}

@media all and (max-width: 400px) {
    .ath_container {
        padding: 0px 20px;
    }

    .ath_container {
        width: auto;
    }

    .ath_container input,
    .ath_container textarea,
    .ath_container select {
        width: 100%;
    }
}

Create jQuery Ajax:

Now create jQuery to render a progress bar during the upload process and create ajax function to upload the file.

function uploadFiles() {
    var fileInput = document.getElementById('fileUpload');
    var files = fileInput.files;

    for (var i = 0; i < files.length; i++) {
        var allowedExtensions = ['.jpg', '.jpeg', '.png', '.pdf', '.svg', '.zip', '.docx', '.xlsx'];
        var fileExtension = files[i].name.substring(files[i].name.lastIndexOf('.')).toLowerCase();

        if (allowedExtensions.includes(fileExtension)) {
            uploadFile(files[i]);
        } else {
            alert('Invalid file type: ' + fileExtension);
        }
    }
}

function uploadFile(file) {
    var formData = new FormData();
    formData.append('file', file);

    var progressBarContainer = document.createElement('div'); // Container for progress bar and file name
    progressBarContainer.className = 'progress-container';

    var fileName = document.createElement('div'); // Display file name
    fileName.className = 'file-name';
    fileName.textContent = file.name;
    //progressBarContainer.appendChild(fileName);

    var progressBar = document.createElement('div'); // Create a new progress bar element
    progressBar.className = 'progress-bar';
    progressBar.id = 'progressBar_' + file.name;

    progressBarContainer.appendChild(progressBar);

    var progressBarsContainer = document.getElementById('progressBarsContainer');

    var newRow = document.createElement('tr'); // Create a new table row
    var newCell = document.createElement('td'); // Create a new table cell
    var newCell2 = document.createElement('td'); // Create a new table cell
    newCell.appendChild(fileName);
    newCell2.appendChild(progressBarContainer);
    newRow.appendChild(newCell);
    newRow.appendChild(newCell2);
    progressBarsContainer.appendChild(newRow);

    var xhr = new XMLHttpRequest();

    xhr.upload.addEventListener('progress', function(event) {
        if (event.lengthComputable) {
            var percent = Math.round((event.loaded / event.total) * 100);
            progressBar.style.width = percent + '%';
            progressBar.innerHTML = percent + '%';
        }
    });

    xhr.addEventListener('load', function(event) {
        var uploadStatus = document.getElementById('uploadStatus');
        uploadStatus.innerHTML = event.target.responseText;
     // Reset the input field of type "file"
    document.getElementById('fileUpload').value = '';
    });

    xhr.open('POST', 'upload.php', true);
    xhr.send(formData);
}

Finally our index.php will be:

<!DOCTYPE html>
<html>

<head>
    <title>multiple File Upload with Progress Bar using jQuery AJAX</title>
    <style>

    </style>
    <link rel="stylesheet" type="text/css" href="style.css" />
</head>

<body>
    <div class="ath_container tile-container ">
        <div id="uploadStatus"></div>
        <h2 style="margin-bottom:10px">AJAX File Upload with Progress Bar using JavaScript</h2>
        <input type="file" id="fileUpload" multiple placeholder="choose file or browse" /> <!-- Add 'multiple' attribute for multiple file selection -->
        <br>
        <br>
        <button onclick="uploadFiles()">Upload</button> <!-- Change function name -->
        <div>
            <table id="progressBarsContainer">
                <!-- Table rows will be dynamically added here -->
            </table>
        </div> <!-- Container for progress bars -->
        <br>
    </div>
    <script>
        function uploadFiles() {
            var fileInput = document.getElementById('fileUpload');
            var files = fileInput.files;

            for (var i = 0; i < files.length; i++) {
                var allowedExtensions = ['.jpg', '.jpeg', '.png', '.pdf', '.svg', '.zip', '.docx', '.xlsx'];
                var fileExtension = files[i].name.substring(files[i].name.lastIndexOf('.')).toLowerCase();

                if (allowedExtensions.includes(fileExtension)) {
                    uploadFile(files[i]);
                } else {
                    alert('Invalid file type: ' + fileExtension);
                }
            }
        }

        function uploadFile(file) {
            var formData = new FormData();
            formData.append('file', file);

            var progressBarContainer = document.createElement('div'); // Container for progress bar and file name
            progressBarContainer.className = 'progress-container';

            var fileName = document.createElement('div'); // Display file name
            fileName.className = 'file-name';
            fileName.textContent = file.name;
            //progressBarContainer.appendChild(fileName);

            var progressBar = document.createElement('div'); // Create a new progress bar element
            progressBar.className = 'progress-bar';
            progressBar.id = 'progressBar_' + file.name;

            progressBarContainer.appendChild(progressBar);

            var progressBarsContainer = document.getElementById('progressBarsContainer');

            var newRow = document.createElement('tr'); // Create a new table row
            var newCell = document.createElement('td'); // Create a new table cell
            var newCell2 = document.createElement('td'); // Create a new table cell
            newCell.appendChild(fileName);
            newCell2.appendChild(progressBarContainer);
            newRow.appendChild(newCell);
            newRow.appendChild(newCell2);
            progressBarsContainer.appendChild(newRow);

            var xhr = new XMLHttpRequest();

            xhr.upload.addEventListener('progress', function(event) {
                if (event.lengthComputable) {
                    var percent = Math.round((event.loaded / event.total) * 100);
                    progressBar.style.width = percent + '%';
                    progressBar.innerHTML = percent + '%';
                }
            });

            xhr.addEventListener('load', function(event) {
                var uploadStatus = document.getElementById('uploadStatus');
                uploadStatus.innerHTML = event.target.responseText;
                // Reset the input field of type "file"
                document.getElementById('fileUpload').value = '';

            });

            xhr.open('POST', 'upload.php', true);
            xhr.send(formData);
        }
    </script>
</body>

</html>

Create a PHP file to handle the file upload to the server.

create upload.php file to handle the uploading to the server

<?php

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['file'])) {
    $file = $_FILES['file'];

    // file will be uploaded to the following folder
    // you should give sufficient file permissions
    $uploadDir = 'uploads/';

    // unique file name generated
    $fileName = uniqid() . '_' . $file['name'];

    // moving the uploaded file from temp location to our target location
    if (move_uploaded_file($file['tmp_name'], $uploadDir . $fileName)) {
        echo 'File uploaded successfully.';
    } else {
        echo 'Failed to upload file.';
    }
}

How to Upload Multiple Files with Progress Bar via Ajax and PHP

Create an HTML form with a file upload form.

Create CSS for styling:

Create jQuery Ajax:

Create a PHP file to handle the file upload to the server.

Take Your Experience to the
Next Level

Subscribe Newsletter

How to Upload Multiple Files with Progress Bar via Ajax and PHP

Create an HTML form with a file upload form.

Create CSS for styling:

Create jQuery Ajax:

Create a PHP file to handle the file upload to the server.

Take Your Experience to the Next Level

Subscribe Newsletter

Take Your Experience to the
Next Level