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php画饼图代码

  • 时间:2015-08-28
  • 发布:达内
  • 来源:达内

《php画饼图代码》
<?
function roundoff ($v) {
if ( $v - floor($v) >= 0.5) {
return(ceil($v));
} else {
return(floor($v));
}
}
function get_xy_factors ($degrees) {
$x = cos((3.1415926* $degrees) / doubleval(180));
$y = sin((3.1415926* $degrees) / doubleval(180));
return (array($x, $y));
}
function draw_pie($id,$rx,$ry,$r,$from,$to,$color) {
ImageArc($id, $rx, $ry, $r, $r, $from, $to, $color);
$axy2 = get_xy_factors($from);
$ax2 = floor($rx + ($axy2[0] * $r / 2));
$ay2 = floor($ry + ($axy2[1] * $r / 2));
ImageLine($id, $rx, $ry, $ax2, $ay2, $color);
$bxy2 = get_xy_factors($to);
$bx2 = ceil($rx + ($bxy2[0] * $r / 2));
$by2 = ceil($ry + ($bxy2[1] * $r / 2));
ImageLine($id, $rx, $ry, $bx2, $by2, $color);
$xy2 = get_xy_factors((($to - $from) / 2) + $from);
$x2 = floor($rx + ($xy2[0] * $r /3));
$y2 = floor($ry + ($xy2[1] * $r /3));
ImageFilltoborder($id, $x2, $y2, $color, $color);
}
function draw_legends($id,$lex,$ley,$ler,$les,$color,$balack) {
ImageFilledRectangle($id, $lex, $ley, $lex+$ler, $ley+$ler, $color);
ImageRectangle($id, $lex, $ley, $lex+$ler, $ley+$ler,$balack);
ImageString($id, 3, $lex+$ler+5, $ley, $les, $color);
}
function display($a,$num) {
$id = imagecreate(600,400);
$angle=30;
$rx=120;
$ry=130;
$r=120;
$color = ImageColorAllocate($id, 255, 255, 255);
$balack = ImageColorAllocate($id, 0, 0, 0);
/* */
$colors=array(ImageColorAllocate($id, 255, 0, 0),
ImageColorAllocate($id, 0, 255, 0),
ImageColorAllocate($id, 0, 0, 255),
ImageColorAllocate($id, 0, 255, 255),
ImageColorAllocate($id, 255, 0, 255));
$les=array( "choice 1", "choice 2", "choice 3", "choice 4", "choice 5");
/* */
$lex=210;
$ley=50;
$ler=13;
$sum=0;
for($i=0;$i<$num;$i++)
$sum=$sum+$a[$i];
$from=$angle;
$to=$from+roundoff(360*$a[0]/$sum);
Imagerectangle($id, 0, 0, 440, 240, $colors[0]);
ImageString($id, 5, 180, 10, "my test", $colors[0]);
for($i=0;$i<$num;$i++) {
$les[$i] .= sprintf( " <%s",$a[$i]);
$les[$i] .= sprintf( " (%.2f%%)", ($a[$i] * 100 / doubleval($sum)));
draw_legends($id,$lex,$ley,$ler,$les[$i],$colors[$i],$balack);
$ley=$ley+20;
}
for($i=0;$i<$num;$i++) {
draw_pie($id,$rx,$ry,$r,$from,$to,$colors[$i]);
$from=$to+1;
$to=$from+roundoff(360*$a[$i+1]/$sum);
}
$tot= "TOTAL:";
$tot .= sprintf( " %s", $sum);
ImageString($id, 5, 210, 200, $tot, $colors[0]);
Imagegif($id);
ImageDestroy($id);
}
Header( "Content-type: image/gif");
$a[0]=15;
$a[1]=6;
$a[2]=8;
$a[3]=11;
$a[4]=9;
$num=5;
display($a,$num);
?>

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