graf

<?PHP
$data = array(
"Led" => 54,
"Uno" => 21,
"Bře" => 23,
"Dub" => 14,
"Kvě" => 52,
"Čer" => 54,
"Črc" => 69,
"Srp" => 33,
"Zář" => 23,
"Říj" => 12,
"Lis" => 51,
"Pro" => 82);

//vytvorime obrazek
$width = 480;
$height = 250;
$image = imagecreate($width, $height);

//barvy
$white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
$navy = imagecolorallocate($image, 0x00, 0x00, 0x80);
$black = imagecolorallocate($image, 0x00, 0x00, 0x00);
$gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0);

//layout
$maxval = max($data);
$nval = sizeof($data);

$vmargin =20;
$hmargin =38;

$base = floor(($width - $hmargin) / $nval);

$ysize = $height - 2 * $vmargin;
$xsize = $nval * $base;


$titlefont = 3;
$title = "Statistiky za rok 2007";
$txtsz = imagefontwidth($titlefont) * strlen($title);
$xpos = (int)($hmargin + ($xsize - $txtsz)/2);
$xpos = max(1, $xpos);
$ypos = 3;
imagestring($image , $titlefont , $xpos , $ypos , $title , $black);

$labelfont = 2;
$ngrid = 4;

$dydat = $maxval / $ngrid;
$dypix = $ysize / ($ngrid + 1);


for ($i = 0; $i <= ($ngrid + 1); $i ++){

	$ydat = (int)($i * $dydat);
	$ypos = $vmargin + $ysize - (int)($i * $dypix);
	
	$txtsz = imagefontwidth($labelfont) * strlen($ydat);
	$txtht = imagefontheight($labelfont);
	
	$xpos = (int)(($hmargin - $txtsz) / 2);
	$xpos = max(1, $xpos);
	
	imagestring($image, $labelfont, $xpos, $ypos - (int)($txtht/2), $ydat, $black);
	
		if(!($i == 0) && !($i > $ngrid)){
			imageline($image, $hmargin - 3, $ypos, $hmargin + $xsize, $ypos, $gray);
		}
}

$padding = 3;
$yscale = $ysize / (($ngrid + 1) * $dydat);

for ($i = 0; list($xval, $yval) = each($data); $i ++){
	
	$ymax = $vmargin + $ysize;
	$ymin = $ymax - (int)($yval * $yscale);
	$xmax = $hmargin + ($i + 1) * $base - $padding;
	$xmin = $hmargin + $i * $base + $padding;
	
	imagefilledrectangle($image, $xmin, $ymin, $xmax, $ymax, $navy);
	
	$txtsz = imagefontwidth($labelfont) * strlen($xval);
	$xpos = $xmin + (int)(($base - $txtsz) /2);
	$xpos = max($xmin, $xpos);
	$ypos = $ymax + 3;
	imagestring($image, $labelfont, $xpos, $ypos, $xval, $black);
}

imagerectangle($image, $hmargin, $vmargin, $hmargin + $xsize, $vmargin + $ysize, $black);


header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
header("Content-type: image/jpeg");

imagejpeg($image);
imagedestroy($image);
?>