imagefill

(PHP 4, PHP 5, PHP 7, PHP 8)

imagefill — Flood fill

Description

imagefill(
    GdImage $image,
    int $x,
    int $y,
    int $color
): true

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

Parameters

image: A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
x: x-coordinate of start point.
y: y-coordinate of start point.
color: The fill color. A color identifier created with imagecolorallocate().

Return Values

Always returns true.

Changelog

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

Examples

Example #1 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);
?>

The above example will output something similar to: