(PHP 4, PHP 5, PHP 7)
imagecolorallocate — Allocate a color for an image
$image
, int $red
, int $green
, int $blue
)Returns a color identifier representing the color composed of the given RGB components.
imagecolorallocate() must be called
to create each color that is to be used in the image represented
by image
.
Note:
The first call to imagecolorallocate() fills the background color in palette-based images - images created using imagecreate().
image
imagecreatetruecolor() 등의 이미지 생성 함수에서 반환한 이미지 자원.
red
Red 컴포넌트 값.
green
Green 컴포넌트 값.
blue
Blue 컴포넌트 값.
A color identifier or FALSE
if the allocation failed.
버전 | 설명 |
---|---|
5.1.3 |
Returns FALSE if the allocation failed. Previously
-1 was returned.
|
Example #1 imagecolorallocate() example
<?php
$im = imagecreate(100, 100);
// sets background to red
$background = imagecolorallocate($im, 255, 0, 0);
// sets some colors
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
// hexadecimal way
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
$black = imagecolorallocate($im, 0x00, 0x00, 0x00);
?>