integer imagecolorallocate(integer image, integer red, integer
green, integer blue)
The imagecolorallocate function allocates a color in the given image. The color is
specified by the amount of red, green, and blue. An identifier is returned for referring to
this color in other functions.
<?
/*
* Draw Red, Green, Blue circles
/
//create white square
$image = imagecreate(200,200);
$colorWhite = imagecolorallocate($image, 255,255,255);
$colorRed = imagecolorallocate($image, 255, 0, 0);
$colorGreen = imagecolorallocate($image, 0, 255, 0);
$colorBlue = imagecolorallocate($image, 0, 0, 255);
imagefill($image, 0, 0, $colorWhite);