$r $g $b
";
//echo ($i/$limit)."
";
$color = imagecolorallocate($grad_image, $r, $g, $b);
switch ($direction) {
case "top-down":
case "down-top":
$x1 = $startx;
$y1 = $i;
$x2 = $endx;
$y2 = $i;
break;
case "left-right":
case "right-left":
$x1 = $i;
$y1 = $starty;
$x2 = $i;
$y2 = $endy;
break;
default:
$start = $rgb_start;
$finish = $rgb_finish;
$limit = $height;
}
$success = imageline($grad_image, $x1, $y1, $x2, $y2, $color);
}
header("Content-Type: image/jpeg");
imagejpeg($grad_image, NULL, 70);
}
/*
decode an HTML hex-code into an array of R,G, and B values.
accepts these formats: (case insensitive) #ffffff, ffffff, #fff, fff
*/
function hex_to_rgb($hex) {
// remove '#'
if(substr($hex,0,1) == '#')
$hex = substr($hex,1) ;
// expand short form ('fff') color
if(strlen($hex) == 3)
{
$hex = substr($hex,0,1) . substr($hex,0,1) .
substr($hex,1,1) . substr($hex,1,1) .
substr($hex,2,1) . substr($hex,2,1) ;
}
if(strlen($hex) != 6) {
$rgb['red'] = hexdec("ff");
$rgb['green'] = hexdec("ff");
$rgb['blue'] = hexdec("ff");
}
else {
// convert
$rgb['red'] = hexdec(substr($hex,0,2)) ;
$rgb['green'] = hexdec(substr($hex,2,2)) ;
$rgb['blue'] = hexdec(substr($hex,4,2)) ;
}
return $rgb ;
}
?>