imagecolorresolve

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Get the index of the specified color or its closest possible alternative
imagecolorresolve(¬†¬†¬†¬†GdImage $image,¬†¬†¬†¬†int $red,¬†¬†¬†¬†int $green,¬†¬†¬†¬†int $blue): int