PHP imagecolorclosesthwb() How to use and examples of getting the closest shade index of the specified color

PHP Image Processing

imagecolorclosesthwb — Get the index of the closest shade of the specified color.

Syntax

int imagecolorclosesthwb ( resource $image , int $red , int $green , int $blue )

Get the index of the closest shade of the given color.

Note:This function requires GD 2.0.1 or higher versions (recommended 2.0.28 and higher versions).

Parameter

• imageImage resource returned by the image creation function (such as imagecreatetruecolor()).

• redValue of the red component.

• greenValue of the green component.

• blueValue of the blue component.

Return Value

Returns an integer, which is the index of the closest shade of the given color.

Example

<?php
$im = imagecreatefromgif('php.gif');
echo 'HWB: ' . imagecolorclosesthwb($im,　116,　115,　152);
imagedestroy($im);
?>

The output of the above example is similar to:

HWB:　33

Related Articles

• imagecolorclosest() Get the index value of the color closest to the specified color.

PHP Image Processing