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August 14, 2025 14:54
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PHP: file upload with progress bar
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Upload</title> | |
| <link rel="stylesheet" href="style.css"> | |
| </head> | |
| <body> | |
| <div id="main"> | |
| <h1><a href="index.html">File Upload Demo</a></h1> | |
| <p>with Progress Bar</p> | |
| <form id="uploadForm" enctype="multipart/form-data"> | |
| <input type="file" name="fileToUpload" id="fileToUpload"> | |
| <input type="submit" value="Upload" name="submit"> | |
| <div id="progressBarContainer"> | |
| <div id="progressBar"></div> | |
| </div> | |
| <div id="percentage"></div> | |
| <div id="message"></div> | |
| </form> | |
| </div> | |
| <script src="upload-progress.js"></script> | |
| </body> | |
| </html> |
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| #main { | |
| margin: 20px; | |
| padding:10px; | |
| border: solid 1px silver; | |
| } | |
| #progressBarContainer { | |
| width:300px; | |
| margin-top: 20px; | |
| } | |
| #progressBar { | |
| height: 20px; | |
| width: 0px; | |
| background-color: green; | |
| color: white; | |
| } | |
| #percentage { | |
| position: absolute; | |
| width: 300px; | |
| height: 20px; | |
| color: white; | |
| z-index: 999; | |
| margin-top:-20px; | |
| font-weight: bold; | |
| } |
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| document.getElementById('uploadForm').addEventListener('submit', function(e) { | |
| e.preventDefault(); | |
| var formData = new FormData(this); | |
| var xhr = new XMLHttpRequest(); | |
| xhr.open('POST', 'upload-progress.php', true); | |
| // progress tracking | |
| xhr.upload.onprogress = function(event) { | |
| if (event.lengthComputable) { | |
| var percentComplete = (event.loaded / event.total) * 100; | |
| document.getElementById('progressBar').style.width = percentComplete + '%'; | |
| document.getElementById('percentage').innerHTML = Math.round(percentComplete) + '%'; | |
| } | |
| }; | |
| // error handling | |
| xhr.onload = function() { | |
| if (xhr.status === 200) { | |
| document.getElementById('message').innerHTML = xhr.responseText; | |
| } else { | |
| document.getElementById('message').innerHTML = 'Upload failed.'; | |
| } | |
| }; | |
| xhr.send(formData); | |
| }); |
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| <?php | |
| if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['fileToUpload'])) { | |
| $target_dir = "uploads/"; | |
| $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]); | |
| if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) { | |
| echo htmlspecialchars( basename( $_FILES["fileToUpload"]["name"])). " uploaded."; | |
| } else { | |
| echo "Error uploading file."; | |
| } | |
| } | |
| ?> |
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