Image Processing

Anon

Hello,

I'd like to write in PHP a script which determines if an image (PNG, GIF, JPG, BMP) is in greyscale or in colors.

I am a brand new user of PHP.

Can anyone help me please ?

Thank u.

Anon

hmmm ... not sure if this will be possible with all they file types - it may be possible with bmp, gif and png but I can't see it working with jpeg's.
You should look up the GD library for full info, try www.php.net first.

Anon

Thx for ur fast answer.

Why do u think it would not work with jpeg ?

And what's ur solution for gif, png and bmp ?

Thk u.

yurko

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ImageColorsTotal
(PHP3 , PHP4 )

ImageColorsTotal -- Find out the number of colors in an image's palette
Description

int imagecolorstotal (int im)

This returns the number of colors in the specified image's palette.

See also imagecolorat() and imagecolorsforindex().

Anon

Thk u.

I'll look for that.

yurko

One thing: GIF support was removed from GD version 1.6 Which is supported now is JPEG, PNG, SWF.