PHP command line - updating the output [duplicate]

This question already has answers here: 开发者_开发知识库 Closed 11 years ago.

Possible Duplicate:

Update Command-line Output, i.e. for Progress

Is it possible in PHP to update the output of PHP via command line? For instance, echo "50%"; will add that to the output, how can I make it so that it shows Updating files... 41% but the % changes based on the progress of the script?

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You have two options, either you can simply print \r or \b, \r returns you to the beginning of the line, \b goes back a single space.

If you want to have more control than this I would suggest using the curses library.