Upload Progress: Track file upload progress

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Version License PHP version Categories
upload-progress 0.1.0GNU General Publi...5.2HTTP, PHP 5, Files and Folders
Description Author

This class can be used to track file upload progress.

It can generate an identifier to track that the file upload that should be used in the HTML form as a hidden field.

When the upload form is submitted, PHP can associate the file being uploaded with the generated identifier, so the class can retrieve information of the upload progress in a parallel HTTP request eventually sent via AJAX.

The class uses the PHP upload progress extension which can be configured to keep track of the upload progress using an APC cache entry, PHP session variables or PHP temporary files.

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Details
Why?
	Basicaly because of crossbrowser compatibility. In fact it is supported by any* browser.
	
How to use?

	$p = new FileUploadProgress("unique_file_description");
	// ... insert in upload form before file field
	echo $p->getHiddenUploadFieldHTML();
	// and now get upload progress info
	$arrayWithThings = $p->getProgress(); // this will throw an exception if no/wrong data
	
Please note!!!
	File upload track should be done using ajax or frames, php script with file data(from $_FILES) will be available
	after upload only, and this class make no sense if used in that script.
	
What to install before to get it working?
	
	- To enable upload track support install and configure apc:
	apc.rfc1867 = 1
	
	- Or to install uploadprogress PHP extension
	
	- Or to install PHP 5.4< and set: session.upload_progress.enabled = 1 ;set by default here
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