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PHP function to make pie chart_PHP tutorial
- WBOYOriginal
- 2016-07-13 17:20:40801browse
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bimage.php3
########
/*
Function description
$chartdata: data, which is an array element
$chartfont: font size
$chartdiameter: determines the size of the pie (it depends on whether you are hungry, haha)
$chartlabel: title, also an array element
$colorslice: color array, such as $tmp =array255,255,255);$colorslic=array($tmp);
$colorborder: border color, array
$colortext: text color, array
$colorbody: background color, array
$file :Output image file name*/
function bimage($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));
}
?>
##########
This is an example of a call
##########
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 )
?>