imagecolorclosest
(PHP 4, PHP 5)
imagecolorclosest — Get the index of the closest color to the specified color
설명
int imagecolorclosest
( resource $image
, int $red
, int $green
, int $blue
)
Returns the index of the color in the palette of the image which is "closest" to the specified RGB value.
The "distance" between the desired color and each color in the palette is calculated as if the RGB values represented points in three-dimensional space.
If you created the image from a file, only colors used in the image are resolved. Colors present only in the pallete are not resolved.
매개변수
- font
-
내장 글꼴 1, 2, 3, 4, 5(큰 숫자가 큰 글꼴)나 imageloadfont()로 등록한 글꼴 식별자를 사용할 수 있습니다.
- red
-
Value of red component
- green
-
Value of green component
- blue
-
Value of blue component
반환값
Returns the index of the closest color, in the palette of the image, to the specified one