php做餅圖的函數

簡介：這是php做餅圖的函數的詳細頁面，介紹了和php,有關的知識、技巧、經驗，和一些php源碼等。

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　 再介紹一下我自己，呵呵
我是個新手，當時學php純粹是為了應付領導哦，讓我們做統計圖，我本來是學asp的，突然改行很不適應，不過php功能的確很強大呀，呵呵，我都離不了他了，這不，餅圖，柱型圖都搞定了，可是還有很多問題我不會，還希望大家多指教呀，說了好多廢話了，我還以為是在寫信那

我的連絡方式是：
email:qingdaohb@yeah.net
http://qdlover.yeah.net
老闆催了，沒辦法，餅圖函數出爐了，大家快搶呀

########
bimage.php3
########

/*
函數說明
$chartdata:資料，是數組元素
$chartfont:字型大小
$chartdiameter:決定餅的大小（要看你餓不餓了，呵呵）
$chartlabel:標題，也是數組元素
$colorslice:顏色數組，例如$tmp=array255,255,255);$colorslic=array($tmp);
$colorborder:邊框顏色，數組
$colortext :文本顏色,數組
$colorbody:背景顏色，數組
$file:輸出圖片檔案名稱*/
function bimage($chartdata,
$chartfont,
$chartdiameter ,
$chartlabel ,
$colorslice,
$colorbody ,
$colorborder,
$colortext ,
$file
)

{
$chartdiameter=150;

$chartfontheight=imagefontheight($chartfont);
$d1=10;$d2=20;$d3=30;$d4=40;$d5=50;
$chartdata=array($d1,$d2,$d3,$d4,$d5);
$chartlabel=array("D1","D2","D3","D4","D5");
$chartwidth=$chartdiameter 20;
$chartheight=$chartdiameter 20 (($chartfontheight 2)*count($chartdata));
header("content-type:image/gif");
$image=imagecreate($chartwidth,$chartheight);
$colorbody =imagecolorallocate ($image,$colorbody[0],$colorbody[1],$colorbody[2]);
$colortext =imagecolorallocate ($image,$colortext[0],$colortext[1],$colortext[2]);
$colorborder =imagecolorallocate ($image,$colorborder[0],$colorborder[1],$colorborder[2]);
for ($i=0;$i
{
$t=imagecolorallocate($image,$colorslice[$i][0],$colorslice[$i][1],$colorslice[$i][2]);
$colorslice[$i]=$t;
}

for($i=0;$i
{
$charttotal =$chartdata[$i];
}
$chartcenterx=$chartdiameter/2 10;
$chartcentery=$chartdiameter/2 10;
$degrees=0;
for($i=0;$i
{
$startdegrees=round($degrees);
$degrees =(($chartdata[$i]/$charttotal)*360);
$enddegrees=round($degrees);
$currentcolor=$colorslice[$i%(count($colorslice))];
imagearc($image ,
$chartcenterx,
$chartcentery,
$chartdiameter,
$chartdiameter,
$startdegrees,
$enddegrees,
$currentcolor);
list($arcx,$arcy)=circle_point($startdegrees,$chartdiameter);

imageline($image,
$chartcenterx,
$chartcentery,
floor($chartcenterx $arcx),
floor($chartcentery $arcy),
$currentcolor );
list($arcx,$arcy)=circle_point($enddegrees,$chartdiameter);

imageline($image,
$chartcenterx,
$chartcentery,
ceil($chartcenterx $arcx),
ceil($chartcentery $arcy),
$currentcolor);

$midpoint=round((($enddegrees-$startdegrees)/2) $startdegrees);
list($arcx,$arcy)= circle_point ( $midpoint, $chartdiameter/2);
imagefilltoborder($image,
floor($chartcenterx $arcx),
floor($chartcentery $arcy),
$currentcolor,
$currentcolor);
}
imagearc($image,
$chartcenterx,
$chartcentery,
$chartdiameter,
$chartdiameter,
0,360,
$colorborder);
imagefilltoborder ($image,
floor($chartcenterx ( $chartdiameter /2) 2),
$chartcentery ,
$colorborder,
$colorborder );
for ($i=0;$i
{
$currentcolor=$colorslice[$i%(count($colorslice))];
$liney=$chartdiameter 20 ($i*($chartfontheight 2));
imagerectangle ($image,
10,
$liney,
20 $chartfontheight,
$liney $chartfontheight,
$colorbody);
imagefilltoborder($image,
12,
$liney 2,
$colorbody,
$currentcolor);
imagestring($image,
$chartfont,
40 $chartfontheight,
$liney,
"$chartlabel[$i]:$chartdata[$i]",
$colortext);

}

imagegif ($image,$file);

}

function radians($degrees)
{
return($degrees*(pi()/180.0));
}
function circle_point($degrees,$diameter)
{
$x=cos(radians($degrees))*($diameter/2);
$y=sin(radians($degrees))*($diameter/2);
return (array($x,$y));
}
?>

###########
這是一個調用的例子
###########

include("bfunc.php3");
$chartdiameter=250;
$chartfont=5;
$d1=10;$d2=20;$d3=30;$d4=40;$d5=50;
$chartdata=array($d1,$d2,$d3,$d4,$d5);
$chartlabel=array("D1","D2","D3","D4","D5");

$colorbody=array(0xff,0xff,0xff);
$colorborder=array(0x00,0x00,0x00);
$colortext=array(0xff,0xff,0xff);

$color1=array(0xff,0x00,0x00);
$color2=array(0x00,0xff,0x00);
$color3=array(0x00,0x00,0xff);
$color4=array(0xff,0xff,0x00);
$color5=array(0xff,0x00,0xff);
$colorslice=array($color1 ,$color2,$color3,$color4,$color5);
$file="tj.gif"
bimage($chartdata,
$chartfont,
$chartdiameter ,
$chartlabel ,
$colorslice,
$colorbody ,
$colorborder,
$colortext ,
$file )
?>

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