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PHP imagecolorexact - get the index value of the specified color

Previous: PHP imagecolordeallocate - assign color for an image

Next: PHP imagecolorexactalpha - Get the index of the specified color + alpha

PHP Image Processing

imagecolorexact - get the index value of the specified color.

grammar

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

Returns the image specified palette index color.

If the image is not in color palette, -1 is returned.

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

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

PHP Image Processing

Previous: PHP imagecolordeallocate - assign color for an image

Next: PHP imagecolorexactalpha - Get the index of the specified color + alpha