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php Image Functions

See sample.

The first image is a jpeg. I need to know the php image function coding to produce the 2nd image (with the green background) from the first.

mms_master

I don't know how to do this if the image is a jpeg sorry.
I'm not sure if its even possible. The only ways I can think of doing it with jpegs is to either replace the white colour for another colour; which could result in problems if there are other white ares in the image that shouldnt be replaced. Or to try to create a shape in the white areas and fill the shape with a new colour. But that means it would only fill that shape, and if you use a different image it wont work...

However if you can use gif images instead of jpeg images I have a solution for you.
Change your first image to a gif with a transparent background instead of a white background.
Then use the following php code
(Note: the output file is a gif, but it can be changed to jpeg as long as the first image is a gif)

<?php
 
function EditImage($image, $red, $green, $blue, $newfile) {
 
	$height = imagesy($image);
	$width = imagesx($image);
 
    $img = imagecreatetruecolor($width, $height);
    $col = imagecolorallocate($img, $red, $green, $blue);
	imagefill($img, 0, 0, $col);
	imagecopymerge($img, $image, 0, 0, 0, 0, $width, $height, 100);
	imagegif($img, $newfile);
	
 
}
 
header("Content-type: image/gif");
$NewImage = EditImage(imagecreatefromgif("merged4.gif"), 3, 108, 101, "newimage.gif");
echo "<html><body>";
echo "<img src='newimage.gif'>";
echo "</body></html>";
?>

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steelseth12

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