imagecolorresolveimagecolorresolvealpha
(PHP 4 >= 4.0.6, PHP 5)
imagecolorresolvealpha — Get the index of the specified color + alpha or its closest possible alternative
설명
int imagecolorresolvealpha
( resource $image
, int $red
, int $green
, int $blue
, int $alpha
)
This function is guaranteed to return a color index for a requested color, either the exact color or the closest possible alternative.
인수
- image
-
imagecreatetruecolor() 등의 이미지 생성 함수에서 반환한 이미지 자원.
- red
-
Value of red component.
- green
-
Value of green component.
- blue
-
Value of blue component.
- alpha
-
A value between 0 and 127. 0 indicates completely opaque while 127 indicates completely transparent.
반환값
Returns a color index.
예제
Example #1 Using imagecoloresolvealpha() to get colors from an image
<?php
// Load an image
$im = imagecreatefromgif('phplogo.gif');
// Get closest colors from the image
$colors = array();
$colors[] = imagecolorresolvealpha($im, 255, 255, 255, 0);
$colors[] = imagecolorresolvealpha($im, 0, 0, 200, 127);
// Output
print_r($colors);
imagedestroy($im);
?>
위 예제의 출력 예시:
Array
(
[0] => 89
[1] => 85
)
주의
Note: 이 함수는 GD 2.0.1 이상이 필요합니다. (2.0.28 이상을 권장합니다)
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