(PHP 4, PHP 5)
imagecolorset вЂ” Set the color for the specified palette index
This sets the specified index in the palette to the specified color. This is useful for creating flood-fill-like effects in palleted images without the overhead of performing the actual flood-fill.
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
An index in the palette
Value of red component
Value of green component
Value of blue component
No value is returned.