PHP | imagefilltoborder() Function

The imagefilltoborder() function is an inbuilt function in PHP which is used to performs a flood fill with a specific color and add a border with a border color.

Syntax:

bool imagefilltoborder( resource $image, int $x, int $y, int $border, int $color )

Parameters: This function accept five parameters as mentioned above and described below:

• $image: It specifies the image to be worked upon.
• $x: It specifies the x-coordinate of start.
• $y: It specifies the y-coordinate of start.
• $border: It specifies the border color.
• $color: It specifies the fill color.

Return Value: This function returns TRUE on success or FALSE on failure.

Exceptions: This function throws Exception on error.

Below given programs illustrate the imagefilltoborder() function in PHP:

Program 1 (Adding fill color to a image):

<?php

// Load the png image
$im = imagecreatefrompng(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Create colors
$borderColor = imagecolorallocate($im, 0, 200, 0);
$fillColor = imagecolorallocate($im, 0, 0, 200);

// Add fill to border
imagefilltoborder($im, 0, 0, $borderColor, $fillColor);

// Show the output
header('Content-type: image/png');
imagepng($im);
?>

Output:

Program 2 (Adding fill color to a drawing):

<?php

// Create the image handle, set the background to white
$im = imagecreatetruecolor(800, 250);
imagefilledrectangle($im, 0, 0, 800,
        250, imagecolorallocate($im, 0, 255, 0));

// Draw an ellipse to fill with a black border
imageellipse($im, 250, 150, 250, 150,
        imagecolorallocate($im, 0, 0, 0));

// Fill the selection
imagefilltoborder($im, 50, 50, imagecolorallocate($im,
        0, 0, 0), imagecolorallocate($im, 255, 0, 0));

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

Output:

Reference: https://www.php.net/manual/en/function.imagefilltoborder.php