(PHP 4, PHP 5)
imagecolorsforindex — Get the colors for an index
$image
, int $index
)Gets the color for a specified index.
imageAn image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
index
The color index.
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);
?>
The above example will output something similar to:
Array ( [red] => 226 [green] => 222 [blue] => 252 [alpha] => 0 )