Flood fill to specific color
Syntax
imagefilltoborder( GdImage $image, int $x, int $y, int $border_color, int $color ): bool
Parameters
image
A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
x
x-coordinate of start.
y
y-coordinate of start.
border_color
The border color. A color identifier created with imagecolorallocate().
color
The fill color. A color identifier created with imagecolorallocate().
Return
Returns true on success or false on failure.
Examples
1 · return
<? $width = 100; $height = 100; $image = imagecreate($width, $height); $red = 0; $green = 0; $blue = 0; $border_color = imagecolorallocate($image, $red, $green, $blue); $red = 255; $green = 255; $blue = 255; $color = imagecolorallocate($image, $red, $green, $blue); $x = 0; $y = 0; $return = imagefilltoborder($image, $x, $y, $border_color, $color); var_export($return); ?>
true
2 · base64
<? $width = 100; $height = 100; $image = imagecreatetruecolor($width, $height); $red = 255; $green = 255; $blue = 255; $border_color = imagecolorallocate($image, $red, $green, $blue); $center_x = 50; $center_y = 50; $width = 100; $height = 100; imageellipse($image, $center_x, $center_y, $width, $height, $border_color); $red = 255; $green = 0; $blue = 0; $color = imagecolorallocate($image, $red, $green, $blue); $x = 0; $y = 0; imagefilltoborder($image, $x, $y, $border_color, $color); $red = 0; $green = 255; $blue = 0; $color = imagecolorallocate($image, $red, $green, $blue); $x = 50; $y = 50; imagefilltoborder($image, $x, $y, $border_color, $color); $red = 0; $green = 0; $blue = 255; $color = imagecolorallocate($image, $red, $green, $blue); $x = 100; $y = 100; imagefilltoborder($image, $x, $y, $border_color, $color); ob_start(); imagepng($image); $output = ob_get_clean(); echo '<!doctype html> <html> <body> <img src="data:image/png;base64,' . base64_encode($output) . '"> </body> </html>'; ?>
<!doctype html> <html> <body> <img src="data:image/png;base64,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"> </body> </html>