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imagecolorresolve
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imagecolorresolve

Name

imagecolorresolve — Determines the closest color match.

Synopsis

int imagecolorresolve(image, red, green, blue); int image: Image identifier int red: Red component int green: Green component int blue: Blue component

Returns

Color index

Description

Returns a color the same as - or as close as possible to - the specified color. Unlike imagecolorexact() , but similar to imagecolorclosest() , this function always returns a color, even if the color returned is not at all similar to the RGB values specified. The function will move through the color palette of the image until it finds a close match, which may not be close at all.

Version

Existing since version 3.0.2

Example

Example 399. Determine the closest color

header("Content-type: image/png");
$im = imagecreate(200, 200);
$red = imagecolorallocate($im, 255, 0, 0);
$offblue = imagecolorallocate($im, 90, 90, 200);
imagefill($im, 0, 0, $red);
imagefilledrectangle($im, 10, 10, 40, 40, $offblue);
// get a close color and new box
$newblue = imagecolorresolve($im, 0, 0, 255);
imagefilledrectangle($im, 100, 100, 140, 140, $newblue);
imagepng($im);
imagedestroy($im);

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