Re: reading an image into a string

From: Date: Tue, 17 Apr 2001 18:16:29 +0000
Subject: Re: reading an image into a string
References: 1  Groups: php.windows 
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Hi Ben, I think you need to clarify this. An image is composed of all kinds of data, depending on the type of image it is. Things like header information, version #, color palettes, and other info related to the image but not actually part of the image itself are included in the binary file along with the image data itself. You can't just "convert" the image portion of an image file to hex without knowing something about the internal layout of the binary data. I assume what you mean here is if you have an image all of one color you'd like to get the hex code for that color. So, as I said above, it's not so easy as just going in and picking a pixel and getting its color. You have to know something about the image format's image representation. Otherwise, I suspect that the GD library may have a function to get the color of a particular pixel whose location (x,y) you specify, though I don't know the function's name off-hand. You might want to look thru the GD documentation. At 04:09 PM 4/17/01 +0100, you wrote:
I need to open an image and convert its binary type to hex, what I need to do is a bin2hex on the binary info of the image, sounds simple enough. Although, I can get php to open the image and read the (binary) contents into a string, can someone help me. Thanks.
           -=- Mike Flynn - Burlington, VT -=-
mike@mikeflynn.net http://www.mikeflynn.net/ * Give blood * Born to see two thousand years
 Of man's effect upon the planet          [Killing Joke]
Extinction seems to be a plausible risk

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