imagecolorsforindex
(PHP 3, PHP 4, PHP 5)
imagecolorsforindex -- Get the colors for an index
Description
array
imagecolorsforindex ( resource image, int index )
This returns an associative array with red, green, blue and alpha keys that contain the appropriate values for the specified color index.
Example 1. imagecolorsforindex() 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, $color_index);
// what is it ?
echo '<pre>';
print_r($color_tran);
echo '</pre>';
?> |
This example will output : Array ( [red] => 226 [green] => 222 [blue] => 252 [alpha] => 0 ) |
|
See also imagecolorat() and imagecolorexact().