imagecolorsforindex

(PHP 4, PHP 5, PHP 7, PHP 8)

imagecolorsforindexGet the colors for an index

Description

imagecolorsforindex(GdImage $image, int $color): array|false

Gets the color for a specified index.

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

color

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, or false on failure.

Changelog

Version Description
8.0.0 image expects a GdImage instance now; previously, a resource was expected.

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