imagecolorset() function in PHP

The imagecolorset() function sets the color for the specified palette index. Using this create flood-fill-like effects in palleted images.

Syntax

imagecolorset ( img, index, red, green, blue, alpha )

Parameters

• img: Image created with imagecreatetruecolor() function

• index: The index in the palette image

• red: Value of red component

• green: Value of green component

• blue: Value of blue component

• alpha: The transparency if image.

Return

The imagecolorset() function returns nothing.

Example

The following is an example

<?php
   $img = imagecreate(550, 400);
   imagecolorallocate($img, 0, 0, 0);
   $bgcolor = imagecolorat($img, 70, 85);
   imagecolorset($img, $bgcolor, 30, 110, 150);
   header('Content-Type: image/png');
   imagepng($img);
   imagedestroy($img);
?>

Output

The following is the output: