imagecolorset
imagecolorstotal
GD and Image 함수 목록
PHP Manual

# imagecolorsforindex

(PHP 4, PHP 5)

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

imagecolorset
imagecolorstotal
GD and Image 함수 목록
PHP Manual