File upload progress bar in php

IvarsK IvarsK 81 1 1 silver badge 1 1 bronze badge. Valdelievre Valdelievre 21 1 1 bronze badge. Darren Java based uploader. A second comet-style request to the web server or a script to report the size of data received. Some webservers like Lighttpd provide modules to do this in-process to save the overhead of calling an external script or process. Funk Forty Niner Steve-o Steve-o Joey Robert Joey Robert 6, 7 7 gold badges 33 33 silver badges 31 31 bronze badges.

And the Dojo upload progress bar is not providing any interface to PHP. Correct me if I'm wrong of course. Ali Lown Ali Lown 2, 17 17 silver badges 22 22 bronze badges. Some add-ons might block iframes, but browsers? Can you give an example?

Googling the terms "ajax php file upload" returns 4 of the top 5 results all using iframes not sure if the 5th does page won't load. Take a look at the examples on each of the sites. Indeed, they use iframes, but don't mention it can be blocked in any case. Or have I missed that? Sorry, mis-read what you were trying to ask, no, I cannot give any examples of browsers that directly block iframes, I was thinking of the addons that people use with them such as noscript which blocks iframes.

Updated text in post for future reference. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. The file upload functionality can be easily implemented using PHP. Generally, the page is refreshed when you upload file using PHP.

While the file is uploading to the server, the web page stays on the loading state. Progress Bar is very useful to overcome this issue by showing the upload progress in a human-readable format. A progress bar is a graphical element that visualizes the progression of an operation.

Generally, a progress bar is used to show progress representation in percentage format for upload, download, or installation.

In this tutorial, we will show you how to upload file in PHP and make a progress bar using jQuery and Ajax. In the example ajax progress bar with percentage script, we will implement the following functionality. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

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Linked Warning The web server's request buffering has to be disabled for this to work properly, else PHP may see the file upload only once fully uploaded. Caution The upload progress information is written to the session before any scripts are executed.

There will be no progress informations in the session array. Unfortunately PHP gets the data only after the upload is completed and can't show any progress.

I hope this informations helps. While the example in the documentation is accurate, the description is a bit off.