PHP | imagefill() Function

Last Updated : 11 Jul, 2025

The imagefill() function is an inbuilt function in PHP which is used to fill the image with the given color. This function performs a flood fill starting at the given coordinate (top left is 0, 0) with the given color in the image. Syntax:

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

Parameters:This function accepts four parameters as mentioned above and described below:

$image: It is returned by one of the image creation functions, such as imagecreatetruecolor(). It is used to create size of image.
$x: This parameter is used to set x-coordinate of starting point.
$y: This parameter is used to set y-coordinate of starting point.
$color: It sets the color of image. A color identifier created by imagecolorallocate() function.

Return Value: This function returns True on success of False on failure. Below programs illustrate the imagefill() function in PHP: Program 1:

php

<?php

// Create an image of given size
$image = imagecreatetruecolor(500, 400);

// Sets background to green
$green = imagecolorallocate($image, 0, 153, 0);
imagefill($image, 0, 0, $green);

header('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?>

Output: image filled

Program 2:

php

<?php
  
// It create the size of image or blank image.
$image = imagecreatetruecolor(500, 300);
  
// Set the background color of image.
$bg = imagecolorallocate($image, 205, 220, 200);
  
// Fill background with above selected color.
imagefill($image, 0, 0, $bg);
 
// Set the color of an ellipse.
$col_ellipse = imagecolorallocate($image, 0, 102, 0);
  
// Function to draw the filled ellipse.
imagefilledellipse($image, 250, 150, 400, 250, $col_ellipse);
  
// Output of the image.
header("Content-type: image/png");
imagepng($image);
  
?>