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PHP imagecolorclosest - Get the index of the color closest to the specified color

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PHP Image Processing

imagecolorclosest - Get the index of the color closest to the specified color.

grammar

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

Returns the image palette and RGB value specified is "closest" color.

Calculation Method "distance" specified color palette of each color is the RGB values as three-dimensional coordinates of points in space.

If you create an image from a file, only the colors used in the image will be discrimination. Appears only in the color palette is not discrimination.

related articles

imagecolorexact () Get the index of the specified color.

PHP Image Processing

Previous: PHP imagecolorat - get the color value of a pixel index

Next: PHP imagecolorclosestalpha - made with the specified color + alpha closest color index