Php/docs/imagickpixel.getcolor

• PHP Manual
• ImagickPixel
• Returns the color

ImagickPixel::getColor

(PECL imagick 2, PECL imagick 3)

ImagickPixel::getColor — Returns the color

说明

public ImagickPixel::getColor ([ int $normalized = 0 ] ) : array

Returns the color described by the ImagickPixel object, as an array. If the color has an opacity channel set, this is provided as a fourth value in the list.

参数

normalized

Normalize the color values. Possible values are 0, 1 or 2.

List of possible values for normalized

normalized	Description
0	The RGB values are returned as ints in the range 0 to 255 (inclusive.) The alpha value is returned as int and is either 0 or 1.
1	The RGBA values are returned as floats in the range 0 to 1 (inclusive.)
2	The RGBA values are returned as ints in the range 0 to 255 (inclusive.)

返回值

An array of channel values. Throws ImagickPixelException on error.

范例

Example #1 Basic Imagick::getColor() usage

<?php//Create an ImagickPixel with the predefined color 'brown'$color = new ImagickPixel('brown');//Set the color to have an alpha of 25%$color->setColorValue(Imagick::COLOR_ALPHA, 64 / 256.0);$colorInfo = $color->getColor();echo "Standard values".PHP_EOL;print_r($colorInfo);$colorInfo = $color->getColor(1);echo "Normalized values:".PHP_EOL;print_r($colorInfo);?>

以上例程会输出：

Standard values
Array
(
    [r] => 165
    [g] => 42
    [b] => 42
    [a] => 0
)
Normalized values:
Array
(
    [r] => 0.64705882352941
    [g] => 0.16470588235294
    [b] => 0.16470588235294
    [a] => 0.25000381475547
)