imagecolorsforindex

(PHP 4, PHP 5, PHP 7)

imagecolorsforindex — Get the colors for an index

설명

array imagecolorsforindex ( resource $image , int $index )

Gets the color for a specified index.

인수

image: imagecreatetruecolor() 등의 이미지 생성 함수에서 반환한 이미지 자원.
index: The color index.

반환값

Returns an associative array with red, green, blue and alpha keys that contain the appropriate values for the specified color index.

예제

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);

?>

위 예제의 출력 예시:

Array
(
   [red] => 226
   [green] => 222
   [blue] => 252
   [alpha] => 0
)

참고

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