norobot_image.php 파일 내용:

<?
include_once("./_common.php");

function echo_check_image($str, $width, $height, $background_color, $text_color, $grid_color)
{
$number = $str;

$background_color = str_replace("#", "", $background_color);
$text_color = str_replace("#", "", $text_color);
$grid_color = str_replace("#", "", $grid_color);

// WebColor -> RGB
$BR = hexdec(substr($background_color, 0, 2));
$BG = hexdec(substr($background_color, 2, 2));
$BB = hexdec(substr($background_color, 4, 2));

$TR = hexdec(substr($text_color, 0, 2));
$TG = hexdec(substr($text_color, 2, 2));
$TB = hexdec(substr($text_color, 4, 2));

$GR = hexdec(substr($grid_color, 0, 2));
$GG = hexdec(substr($grid_color, 2, 2));
$GB = hexdec(substr($grid_color, 4, 2));

$im = @imagecreate($width, $height) or die("Cannot Initialize new GD image stream");
header ("Content-type: image/png");

$background_color = imagecolorallocate($im, $BR, $BG, $BB);
$text_color = imagecolorallocate($im, $TR, $TG, $TB);
$grid_color = imagecolorallocate($im, $GR, $GG, $GB);


image_random_grid($im, $width, $height, 5, $grid_color);
imagestring($im, rand(4,6), rand(5,15), rand(1,3), $number, $text_color);
imagepng($im);
imagedestroy($im);
}

function image_random_grid($im, $w, $h, $s, $color)
{
for($i=1; $i<$w/$s; $i++) {
$tmp = rand($s-$s/3, $s+$s/3);
imageline($im, $i*$tmp, 0, $i*$tmp, $h, $color);
}

for($i=1; $i<$h/$s; $i++) {
$tmp = rand($s-$s/3, $s+$s/3);
imageline($im, 0, $i*$tmp, $w, $i*$tmp, $color);
}
}

//echo_check_image(rand(4,6), 65, 20, "#FF33CC", "#FFFFFF", "#FF79DE");
echo_check_image($_SESSION['ss_norobot_key'], 80, 19, "#FF33CC", "#FFFFFF", "#FF79DE");
?>

감사합니다.