php绘图，请圣人修改。

程序员文章站 2022-05-01 22:46:24

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php绘图，请高人修改。。



$kuan=30;//色柱宽

$jiange=20;//色柱间间隔

$zuo=20;//左侧留空

$you=20;//右侧留空

$shang=20;//上留空

$xia=10;//下留空

$zuidashujuzhi=1;//初始化纵轴最大数据值

if ($_GET["a"]=="") die("error id:0");

$shuju=split(",",$_GET["a"]);

//得到最大值

for($i=0;$i
if(!is_numeric($shuju[$i])) die("error id:1");

if($shuju[$i]>$zuidashujuzhi) $zuidashujuzhi=$shuju[$i];

}

//计算图像宽度 

$img_kuan=$zuo+$you+$jiange+count($shuju)*($kuan+$jiange);

//图像高 

$img_gao=170;

//存储色柱高度的数组

$zhugaodu = array();

$image = imagecreate($img_kuan,$img_gao);

$white = imagecolorallocate($image, 0xEE, 0xEE, 0xEE);

//色柱颜色

$shuju_yanse =array(

imagecolorallocate($image, 0x97, 0xbd, 0x00),

imagecolorallocate($image, 0x00, 0x99, 0x00),

imagecolorallocate($image, 0xcc, 0x33, 0x00),

imagecolorallocate($image, 0xff, 0xcc, 0x00),

imagecolorallocate($image, 0x33, 0x66, 0xcc),

imagecolorallocate($image, 0x33, 0xcc, 0x33),

imagecolorallocate($image, 0xff, 0x99, 0x33),

imagecolorallocate($image, 0xcc, 0xcc, 0x99),

imagecolorallocate($image, 0x99, 0xcc, 0x66),

imagecolorallocate($image, 0x66, 0xff, 0x99)

);




//坐标轴颜色

$zuobiao_yanse = imagecolorallocate($image, 0x00, 0x00, 0x00);

//横轴

imageline ( $image, $zuo, $img_gao-$xia, $img_kuan-$you/2, $img_gao-$xia, $zuobiao_yanse);

//纵轴

imageline ( $image, $zuo, $shang/2, $zuo, $img_gao-$xia, $zuobiao_yanse);




//纵轴刻度，纵轴上共标注4个点，所以这里分别计算即可

imageline ( $image, $zuo, $shang, $zuo+6, $shang, $zuobiao_yanse);

imagestring ( $image, 3, $zuo/4, $shang,round($zuidashujuzhi), $zuobiao_yanse);

imageline ( $image, $zuo, $shang+($img_gao-$shang-$xia)*1/4, $zuo+6, round($shang+($img_gao-$shang-$xia)*1/4), $zuobiao_yanse);

imagestring ( $image, 3, $zuo/4, $shang+($img_gao-$shang-$xia)*1/4,round($zuidashujuzhi*3/4), $zuobiao_yanse);

imageline ( $image, $zuo, $shang+($img_gao-$shang-$xia)*2/4, $zuo+6, $shang+($img_gao-$shang-$xia)*2/4, $zuobiao_yanse);

imagestring ( $image, 3, $zuo/4, $shang+($img_gao-$shang-$xia)*2/4,round($zuidashujuzhi*2/4), $zuobiao_yanse);

imageline ( $image, $zuo, $shang+($img_gao-$shang-$xia)*3/4, $zuo+6, $shang+($img_gao-$shang-$xia)*3/4, $zuobiao_yanse);

imagestring ( $image, 3, $zuo/4, $shang+($img_gao-$shang-$xia)*3/4,round($zuidashujuzhi*1/4), $zuobiao_yanse);




//得到每个柱的高度

for($i=0;$i
array_push ($zhugaodu, round(($img_gao-$shang-$xia)*$shuju[$i]/$zuidashujuzhi));

}

//画数据柱

$shuju_yanse_int=0;

for($i=0;$i
imagefilledrectangle( $image,$zuo+$jiange+$i*($kuan+$jiange),$shang+($img_gao-$shang-$xia)-$zhugaodu[$i],$zuo+$jiange+$i*($kuan+$jiange)+$kuan,($img_gao-$xia)-1 ,$shuju_yanse[$shuju_yanse_int]);

//因为只定义了10种颜色，所以这里做一个循环　　

if($shuju_yanse_int==9){

$shuju_yanse_int=0;

}else{

$shuju_yanse_int++;

}

}

//标注数据柱上方数据值

for($i=0;$i
imagestring ( $image, 1, $zuo+$jiange+$i*($kuan+$jiange)+2,$shang+($img_gao-$shang-$xia)-$zhugaodu[$i]-10,$shuju[$i], $zuobiao_yanse);

}

header('Content-type: image/png');

imagepng($image);

imagedestroy($image);

?>