(PHP 4, PHP 5, PHP 7)
Flood fill to specific color
bool imagefilltoborder ( resource $image, int $x, int $y, int $border, int $color )
imagefilltoborder() performs a flood fill whose border color is defined by border. The starting point for the fill is x, y (top left is 0, 0) and the region is filled with color color.
Parameters:
image
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
x
x-coordinate of start.
y
y-coordinate of start.
border
The border color. A color identifier created with imagecolorallocate().
color
The fill color. A color identifier created with imagecolorallocate().
Returns:
Returns TRUE on success or FALSE on failure.
Examples:
Filling an ellipse with a color
<?php
// Create the image handle, set the background to white
$im = imagecreatetruecolor(100, 100);
imagefilledrectangle($im, 0, 0, 100, 100, imagecolorallocate($im, 255, 255, 255));
// Draw an ellipse to fill with a black border
imageellipse($im, 50, 50, 50, 50, imagecolorallocate($im, 0, 0, 0));
// Set the border and fill colors
$border = imagecolorallocate($im, 0, 0, 0);
$fill = imagecolorallocate($im, 255, 0, 0);
// Fill the selection
imagefilltoborder($im, 50, 50, $border, $fill);
// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>
The above example will output something similar to:
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