PHP Curl progress bar (callback returning percentage)
Suppose you have a progress bar HTML:
<div id="progress-bar"> <div id="progress">0%</div></div>CSS:
#progress-bar { width: 200px; padding: 2px; border: 2px solid #aaa; background: #fff;}#progress { background: #000; color: #fff; overflow: hidden; white-space: nowrap; padding: 5px 0; text-indent: 5px; width: 0%;}And JavaScript:
var progressElement = document.getElementById('progress')function updateProgress(percentage) { progressElement.style.width = percentage + '%'; progressElement.innerHTML = percentage + '%';}You can have it output JavaScript and have it update the progress bar for you, for example:
<script>updateProgress(0);</script><script>updateProgress(0.1);</script><script>updateProgress(0.2);</script>....Note that you can't put each update in separate script block, because the browser will try to read the full script before executing and the progress bar will not work.