(PHP 4, PHP 5)
imagecolorsforindex — Get the colors for an index
Gets the color for a specified index.
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
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, $color_index);
// what is it ?
print_r($color_tran);
?>
Результатом выполнения данного примера будет что-то подобное:
Array
(
[red] => 226
[green] => 222
[blue] => 252
[alpha] => 0
)