php man page for imagecolorset

IMAGECOLORSET(3)							 1							  IMAGECOLORSET(3)

imagecolorset - Set the color for the specified palette index

SYNOPSIS
       void imagecolorset (resource  $image, int  $index, int  $red, int  $green, int  $blue, [int  $alpha])

DESCRIPTION
	This  sets  the  specified  index  in  the palette to the specified color. This is useful for creating flood-fill-like effects in palleted
       images without the overhead of performing the actual flood-fill.

PARAMETERS
	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $index
		- An index in the palette.

	      o $red
		-Value of red component.

	      o $green
		-Value of green component.

	      o $blue
		-Value of blue component.

	      o $alpha
		- Value of alpha component.

RETURN VALUES
	No value is returned.

CHANGELOG
       +--------+----------------------------------+
       |Version |				   |
       |	|				   |
       |	|	    Description 	   |
       |	|				   |
       +--------+----------------------------------+
       | 5.4.0	|				   |
       |	|				   |
       |	|  The $alpha parameter was added. |
       |	|				   |
       +--------+----------------------------------+
EXAMPLES
       Example #1

	      imagecolorset(3) example

	      <?php
	      // Create a 300x100 image
	      $im = imagecreate(300, 100);

	      // Set the background to be red
	      imagecolorallocate($im, 255, 0, 0);

	      // Get the color index for the background
	      $bg = imagecolorat($im, 0, 0);

	      // Set the backgrund to be blue
	      imagecolorset($im, $bg, 0, 0, 255);

	      // Output the image to the browser
	      header('Content-Type: image/png');

	      imagepng($im);
	      imagedestroy($im);
	      ?>

SEE ALSO
       imagecolorat(3).

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