php man page for imagecolorsforindex

IMAGECOLORSFORINDEX(3)							 1						    IMAGECOLORSFORINDEX(3)

imagecolorsforindex - Get the colors for an index

SYNOPSIS
       array imagecolorsforindex (resource  $image, int  $index)

DESCRIPTION
	Gets the color for a specified index.

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

	      o $index
		- The color index.

RETURN VALUES
	Returns an associative array with red, green, blue and alpha keys that contain the appropriate values for the specified color index.

EXAMPLES
       Example #1

	      imagecolorsforindex(3) example

	      <?php

	      // open an image
	      $im = imagecreatefrompng('nexen.png');

	      // get a color
	      $start_x = 40;
	      $start_y = 50;
	      $color_index = imagecolorat($im, $start_x, $start_y);

	      // make it human readable
	      $color_tran = imagecolorsforindex($im, $color_index);

	      // what is it ?
	      print_r($color_tran);

	      ?>

	      The above example will output something similar to:

	      Array
	      (
		 [red] => 226
		 [green] => 222
		 [blue] => 252
		 [alpha] => 0
	      )

SEE ALSO
       imagecolorat(3), imagecolorexact(3).

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