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().