PHP Manual: Get the interpolation method

int imagegetinterpolation(GdImage $image)

Gets the currently set interpolation method of the image.

image: A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor.

Returns the interpolation method.

Version	Description
8.0.0	`image` expects a GdImage instance now; previously, a valid `gd` resource was expected.

imagegetinterpolation