update : 2015.11.03
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imagecolorexactalpha(PHP 4 >= 4.0.6, PHP 5, PHP 7) imagecolorexactalpha — Get the index of the specified color + alpha 설명
int imagecolorexactalpha
( resource
$image
, int $red
, int $green
, int $blue
, int $alpha
)Returns the index of the specified color+alpha in the palette of the image. 인수
반환값Returns the index of the specified color+alpha in the palette of the image, or -1 if the color does not exist in the image's palette. 예제Example #1 Get colors from the GD logo
<?php 위 예제의 출력 예시: Array ( [0] => 16711680 [1] => 2130706432 [2] => 939524095 [3] => 342163252 ) 주의
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