PHP 4, PHP 5, PHP 7, PHP 8
imagefilltoborder - Flood fill to specific color
Code Examples

imagefilltoborder( GdImage$image, int$x, int$y, int$border_color, int$color ): bool

imagefilltoborder performs a flood fill whose border color is defined by border_color. The starting point for the fill is x, y (top left is 0, 0) and the region is filled with color color.



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


x-coordinate of start.


y-coordinate of start.


The border color. A color identifier created with imagecolorallocate.


The fill color. A color identifier created with imagecolorallocate.

Return Values

Returns true on success or false on failure.


The algorithm does not explicitly remember which pixels have already been set, but rather infers that from the color of the pixel, so it cannot distinguish between freshly set pixels and pixels that are already there. That means chosing any fill color that is already used in the image may yield undesired results.


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

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Function imagefilltoborder:

Image Processing and GD Functions

Most used PHP functions