imagecolorsforindex

(PHP 4, PHP 5)

imagecolorsforindex — Get the colors for an index

Description

array imagecolorsforindex ( resource $image , int $index )

Gets the color for a specified index.

Parameters

image

An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

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() 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() - Get the index of the color of a pixel
• imagecolorexact() - Get the index of the specified color