PHP/ JS File Upload Progress Bar [duplicate]

开发者_开发技巧This question already has answers here: PHP Ajax Upload Progress Bar (6 answers) Closed 8 years ago.

How do I create a file upload progress bar similar to getdropbox.com using PHP and/or JavaScript?

Thanks, -Giles

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check http://www.ibm.com/developerworks/library/os-php-v525/index.html for a tutorial on this topic

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I think the best way to go about this is to use a Flash SWF to actually do the uploading and have it call javascript functions (using 'external interface') to update progress bars and so forth. There are a couple of projects out there for different javascript libraries, here is an example for jQuery: here