PHP | imagefilltoborder() Function

Last Updated : 31 Jan, 2020
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 
<?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 
<?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
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