convert color image into black and white image using php gd library

Posted by vijay on Stack Overflow See other posts from Stack Overflow or by vijay
Published on 2010-04-24T06:33:34Z Indexed on 2010/04/24 6:43 UTC
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color

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image

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grayscale

hi

i m having a page in which users upload their images to convert into black and white image..

i tried some of the code from internet but it works only for jpeg image when i upload some gif

or png images it shows an full black image or the same image with the same color scale...

any codes appreciated..

regards vijay.

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