imagefill

(PHP 4, PHP 5, PHP 7)

Flood fill

bool imagefill ( resource $image, int $x, int $y, int $color )

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

Parameters:

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.

color

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

Returns:

Returns TRUE on success or FALSE on failure.

Examples:

imagefill() example

<?php
 
$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: