Tutorial PHP : Cara Menampilkan Grafik Pie dengan PHP dan MySQL

CREATE TABLE `tabelpengunjung` (
`nomor` int(5) NOT NULL auto_increment,
`nama` varchar(50) NOT NULL,
`tanggal` date NOT NULL,
PRIMARY KEY  (`nomor`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=9 ;
INSERT INTO `tabelpengunjung` (`nomor`, `nama`, `tanggal`) VALUES
(1, ‘Ivan’, ’2010-05-04′),
(2, ‘Nita’, ’2010-05-11′),
(3, ‘Lily’, ’2010-05-18′),
(4, ‘Viekka’, ’2010-06-15′),
(5, ‘Dinda’, ’2010-07-13′),
(6, ‘Putrie’, ’2010-07-06′),
(7, ‘Joko’, ’2010-08-11′),
(8, ‘Jaka’, ’2010-08-17′);

<?php
mysql_connect("localhost","root","");
mysql_select_db("test");
$data = "";
$label = "";
$query = mysql_query(“select count(*) as jumlah, monthname(tanggal) as bulan
from tabelpengunjung group by monthname(tanggal)”);
while($q=mysql_fetch_array($query)){
$data = $data.$q['jumlah'].”*”;
$label = $label.$q['bulan'].”*”;
}
$data = substr($data,0,-1);
$label = substr($label,0,-1);
$show_label = true;
$show_percent = true;
$show_text = true;
$show_parts = false;
$label_form = ‘square’;
$width = 199;
$background_color = ‘FFFFFF’;
$text_color = ’000000′;
$colors = array(’003366′, ‘CCD6E0′, ’7F99B2′,’F7EFC6′, ‘C6BE8C’, ‘CC6600′,’990000′,’520000′,’BFBFC1′,’808080′);
$shadow_height = 16;
$shadow_dark = true;
$height = $width/2;
$data = explode(‘*’,$data);
if ($label != ”) $label = explode(‘*’,$label);
for ($i = 0; $i < count($label); $i++)
{
if ($data[$i]/array_sum($data) < 0.1) $number[$i] = ‘ ‘.number_format(($data[$i]/array_sum($data))*100,1,’,',’.').’%';
else $number[$i] = number_format(($data[$i]/array_sum($data))*100,1,’,',’.').’%';
if (strlen($label[$i]) > $text_length) $text_length = strlen($label[$i]);
}
if (is_array($label))
{
$antal_label = count($label);
$xtra = (5+15*$antal_label)-($height+ceil($shadow_height));
if ($xtra > 0) $xtra_height = (5+15*$antal_label)-($height+ceil($shadow_height));
$xtra_width = 5;
if ($show_label) $xtra_width += 20;
if ($show_percent) $xtra_width += 45;
if ($show_text) $xtra_width += $text_length*8;
if ($show_parts) $xtra_width += 35;
}
$img = ImageCreateTrueColor($width+$xtra_width, $height+ceil($shadow_height)+$xtra_height);\
ImageFill($img, 0, 0, colorHex($img, $background_color));
foreach ($colors as $colorkode)
{
$fill_color[] = colorHex($img, $colorkode);
$shadow_color[] = colorHexshadow($img, $colorkode, $shadow_dark);
}
$label_place = 5;
if (is_array($label))
{
for ($i = 0; $i < count($label); $i++)
{
if ($label_form == ’round’ && $show_label)
{
imagefilledellipse($img,$width+11,$label_place+5,10,10,colorHex($img, $colors[$i % count($colors)]));
imageellipse($img,$width+11,$label_place+5,10,10,colorHex($img, $text_color));
}
else if ($label_form == ‘square’ && $show_label)
{
imagefilledrectangle($img,$width+6,$label_place,$width+16,$label_place+10,colorHex($img, $colors[$i % count($colors)]));
imagerectangle($img,$width+6,$label_place,$width+16,$label_place+10,colorHex($img, $text_color));
}
if ($show_percent) $label_output = $number[$i].’ ‘;
if ($show_text) $label_output = $label_output.$label[$i].’ ‘;
if ($show_parts) $label_output = $label_output.$data[$i];
imagestring($img,’2′,$width+20,$label_place,$label_output,colorHex($img, $text_color));
$label_output = ”;
$label_place = $label_place + 15;
}
}
$centerX = round($width/2);
$centerY = round($height/2);
$diameterX = $width-4;
$diameterY = $height-4;
$data_sum = array_sum($data);
$start = 270;
for ($i = 0; $i < count($data); $i++)
{
$value += $data[$i];
$end = ceil(($value/$data_sum)*360) + 270;
$slice[] = array($start, $end, $shadow_color[$value_counter % count($shadow_color)], $fill_color[$value_counter % count($fill_color)]);
$start = $end;
$value_counter++;
}
for ($i=$centerY+$shadow_height; $i>$centerY; $i–)
{
for ($j = 0; $j < count($slice); $j++)
{
if ($slice[$j][0] != $slice[$j][1]) ImageFilledArc($img, $centerX, $i, $diameterX, $diameterY, $slice[$j][0], $slice[$j][1], $slice[$j][2], IMG_ARC_PIE);
}
}
for ($j = 0; $j < count($slice); $j++)
{
if ($slice[$j][0] != $slice[$j][1]) ImageFilledArc($img, $centerX, $centerY, $diameterX, $diameterY, $slice[$j][0], $slice[$j][1], $slice[$j][3], IMG_ARC_PIE);
}
OutputImage($img);
ImageDestroy($img);
function colorHex($img, $HexColorString)
{
$R = hexdec(substr($HexColorString, 0, 2));
$G = hexdec(substr($HexColorString, 2, 2));
$B = hexdec(substr($HexColorString, 4, 2));
return ImageColorAllocate($img, $R, $G, $B);
}
function colorHexshadow($img, $HexColorString, $mork)
{
$R = hexdec(substr($HexColorString, 0, 2));
$G = hexdec(substr($HexColorString, 2, 2));
$B = hexdec(substr($HexColorString, 4, 2));
if ($mork)
{
($R > 99) ? $R -= 100 : $R = 0;
($G > 99) ? $G -= 100 : $G = 0;
($B > 99) ? $B -= 100 : $B = 0;
}
else
{
($R < 220) ? $R += 35 : $R = 255;
($G < 220) ? $G += 35 : $G = 255;
($B < 220) ? $B += 35 : $B = 255;
}
return ImageColorAllocate($img, $R, $G, $B);
}
function OutputImage($img)
{
header(‘Content-type: image/jpg’);
ImageJPEG($img,NULL,100);
}
?>