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PHP : Function Reference : Image Functions : imagefill

imagefill

Flood fill (PHP 4, PHP 5)
bool imagefill ( resource image, int x, int y, int color )

Performs a flood fill starting at the given coordinate (top left is 0, 0) with the given color in the image.

Parameters

image

An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

x

x-coordinate of start point

y

y-coordinate of start point

color

The fill color. A color identifier created with imagecolorallocate()

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example1007.imagefill() example

<?php

$im
= imagecreatetruecolor(100, 100);

// sets background to red
$red = imagecolorallocate($im, 255, 0, 0);
imagefill($im, 0, 0, $red);

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

The above example will output something similar to:


Related Examples ( Source code ) » imagefill















Code Examples / Notes » imagefill

jonathan dot aquino

Use imageSaveAlpha($image, true); to preserve transparency.

igor garcia

This function, cannot deal with transparencies.
So you need to use imagecolorallocate instead of imagecolorallocatealpha.
Thus, be careful with color variables that allready set with imageallocatecoloralpha because this can slow-down or hang-up your system.


aqmprod

This function does not seem to work with images already been transparent. If you fill at x=0, y=0, and there are still transparent parts that you did
not reach with your fill, they change to a different color.
The ImageColorSet function seems to be the solution, but i can't work with transparancy.


gromitt

If you need to fill a whole image (immediatly after its creation for instance), consider applying a filled rectangle instead, using imagefilledrectangle() :
<?php
$gdImage = imagecreatetruecolor(100, 100);
$gdColor = imagecolorallocate($gdImage, 255, 0, 0); // red
imagefilledrectangle($gdImage, 0, 0, 99, 99, $gdColor);
?>
which will require much less logic and processing from GD.


razonklnbd

I spend more then two hour to find a function that can fill a pattern or file as background instead of color. but i can't find. so i develop the following function. i though this function will save time who need it...
Function will get four parameter
1. Main Image Identifier
2. Pattern Image Identifier
3. Final Image Width
4. Final Image Height
If you set final image width or height is less then main image width or height then you may get wrong result
<?php
function fill_with_patternfile($p_main_im, $p_patternfile_im, $p_width, $p_height){
$pimiX=$p_patternfile_im;
$pw=imagesx($pimiX);
$ph=imagesy($pimiX);
$targetImageIdentifier=imagecreatetruecolor($p_width,$p_height);
if($pw<$p_width && $ph<$p_height){
for($pX=0;$pX<$p_width;$pX+=$pw){
for($pY=0;$pY<$p_height;$pY+=$ph){
imagecopy($targetImageIdentifier,$pimiX,$pX,$pY,0,0,$pw,$ph);
}
}
}else imagecopy($targetImageIdentifier,$pimiX,0,0,0,0,$pw,$ph);
$w=imagesx($p_main_im);
$h=imagesy($p_main_im);
$nX=0;
if($w<$p_width) $nX=intval(($p_width-$w)/2);
$nY=0;
if($h<$p_height) $nY=intval(($p_height-$h)/2);
imagecopy($targetImageIdentifier,$p_main_im,$nX,$nY,0,0,$w,$h);
return $targetImageIdentifier;
}
// If you want to use a gif or png file as
// pattern file you need to change function below :)
$pattern_im=imagecreatefromjpeg('logo.jpg');
// If you want to use a gif or png file as
// main file you need to change function below :)
$main_im=imagecreatefromjpeg('r2.jpg');
// call the function width 500 and height 500
// if your width and height is less then main images
// width and height then you can't understand any change!
$final=fill_with_patternfile($main_im, $pattern_im, 500, 500);
// view the image and destroy all instance
header('Content-type: image/jpeg');
imagejpeg($final);
imagedestroy($final);
imagedestroy($main_im);
imagedestroy($pattern_im);
exit();
?>


norxh

For new images, you must allocate a color before this function will work.

info

Example 1
The filled region will be external to a demarcated region, if the initial coordinates will be outside of this region.
<?php
$src621 = imagecreate(200,200);
$clr_1_621 = imagecolorallocate($src621, 255, 255, 0);
$clr_2_621 = imagecolorallocate($src621, 0, 0, 250);
$clr_4_621 = imagecolorallocate($src621, 2,2,55);
imagerectangle($src621, 100, 100, 150, 150, $clr_4_621);
imagefill($src621, 110, 110, $clr_2_621);
header("Content-Type: image/png");
imagepng ($src621);
imagedestroy($src621);
?>
Example 2
The filled region will be internal to a demarcated region, if the initial coordinates will be inside of this region.
<?php
$src622 = imagecreate(200,200);
$clr_1_622 = imagecolorallocate($src622, 255, 255, 0);
$clr_2_622 = imagecolorallocate($src622, 0, 0, 250);
$clr_4_622 = imagecolorallocate($src622, 2,2,55);
imagerectangle($src622, 100, 100, 150, 150, $clr_4_622);
imagefill($src622, 10, 10, $clr_2_622);
header("Content-Type: image/png");
imagepng ($src622);
imagedestroy($src622);
?>
See another examples at:
http://www.educar.pro.br/a/gdlib/index.php?pn=50&tr=97


colin

Didn't see this documented, although it's outlined in imagefilledrectangle, it wasn't quite so obvious to me at first
imageSetTile($image,$imageBack);
imagefill($image,0,0,IMG_COLOR_TILED);
Will fill an image with a texture (this is great as I'm building a logo/template creator)


pisu

chess board
<?php
$kep = imagecreate(400,400);
$fekete = imagecolorallocate($kep,0,0,0);
$feher = imagecolorallocate($kep,255,255,255);
//imagefill($kep,50,50,$fekete);
imagefill($kep,50,20,$feher);
for ($i=1;$i<8;$i++)  {
 $k = $i*50;
 imageline($kep,0,$k,400,$k,$fekete);
 imageline($kep,$k,0,$k,400,$fekete);
 }
for ($i=0;$i<8;$i++)  {
 for ($j=0;$j<8;$j++)  {
   $x = $i*50 + 2;
       $y = $j*50 + 2;
   if (  ( ($i % 2) + ($j % 2) )  % 2 == 0 )  {
         imagefill($kep,$x,$y,$fekete);
         }
   }
 }
// imagecolortransparent($kek,$piros);
header('content-type : image/png');
imagepng($kep);
?>


08-feb-2003 01:49

Actually, it can handle pre-transparent images. To remove it you need to do something like:
  imagecolortransparent($img, 0);
to null out the previous transparency colors. ;)


gelak

//A smiley face ;]
<?php
header('Content-type: image/png');
$smile=imagecreate(400,400);
$kek=imagecolorallocate($smile,0,0,255);
$feher=imagecolorallocate($smile,255,255,255);
$sarga=imagecolorallocate($smile,255,255,0);
$fekete=imagecolorallocate($smile,0,0,0);
imagefill($smile,0,0,$kek);
imagearc($smile,200,200,300,300,0,360,$fekete);
imagearc($smile,200,225,200,150,0,180,$fekete);
imagearc($smile,200,225,200,123,0,180,$fekete);
imagearc($smile,150,150,20,20,0,360,$fekete);
imagearc($smile,250,150,20,20,0,360,$fekete);
imagefill($smile,200,200,$sarga);
imagefill($smile,200,290,$fekete);
imagefill($smile,155,155,$fekete);
imagefill($smile,255,155,$fekete);
imagepng($smile);
?>


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image2wbmp
imagealphablending
imageantialias
imagearc
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imagecolorallocate
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imagecreatefromstring
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imagecreatetruecolor
imagedashedline
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imagefill
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