PHP imagefill function

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imagefill

(PHP 3, PHP 4, PHP 5)

Performs a flood fill starting at the given coordinate (top left is 0, 0)
with the given color in the
image.

An image resource, returned by one of the image creation functions,
such as imagecreatetruecolor().

x-coordinate of start point

y-coordinate of start point

The fill color. A color identifier created with
imagecolorallocate()

Returns TRUE on success or FALSE on failure.

Example 1. imagefill() example

 
$im = imagecreatetruecolor(100, 100);
 
// sets background to red
$red = imagecolorallocate($im, 255, 0, 0);
imagefill($im, 0, 0, $red);
 
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);

The above example will output
something similar to: