php绘图，请圣人修改。 -PHP Tutorial-php.cn

php绘图，请圣人修改。

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Release： 2016-06-13 12:36:20

Original

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php绘图，请高人修改。。

<?<br />
$kuan=30;//色柱宽<br />
$jiange=20;//色柱间间隔<br />
$zuo=20;//左侧留空<br />
$you=20;//右侧留空<br />
$shang=20;//上留空<br />
$xia=10;//下留空<br />
$zuidashujuzhi=1;//初始化纵轴最大数据值<br />
if ($_GET["a"]=="") die("error id:0");<br />
$shuju=split(",",$_GET["a"]);<br />
//得到最大值<br />
for($i=0;$i<count($shuju);$i++){<br />
if(!is_numeric($shuju[$i])) die("error id:1");<br />
if($shuju[$i]>$zuidashujuzhi) $zuidashujuzhi=$shuju[$i];<br />
}<br />
//计算图像宽度 <br />
$img_kuan=$zuo+$you+$jiange+count($shuju)*($kuan+$jiange);<br />
//图像高 <br />
$img_gao=170;<br />
//存储色柱高度的数组<br />
$zhugaodu = array();<br />
$image = imagecreate($img_kuan,$img_gao);<br />
$white = imagecolorallocate($image, 0xEE, 0xEE, 0xEE);<br />
//色柱颜色<br />
$shuju_yanse =array(<br />
imagecolorallocate($image, 0x97, 0xbd, 0x00),<br />
imagecolorallocate($image, 0x00, 0x99, 0x00),<br />
imagecolorallocate($image, 0xcc, 0x33, 0x00),<br />
imagecolorallocate($image, 0xff, 0xcc, 0x00),<br />
imagecolorallocate($image, 0x33, 0x66, 0xcc),<br />
imagecolorallocate($image, 0x33, 0xcc, 0x33),<br />
imagecolorallocate($image, 0xff, 0x99, 0x33),<br />
imagecolorallocate($image, 0xcc, 0xcc, 0x99),<br />
imagecolorallocate($image, 0x99, 0xcc, 0x66),<br />
imagecolorallocate($image, 0x66, 0xff, 0x99)<br />
);<br />
<br />
<br />
<br />
//坐标轴颜色<br />
$zuobiao_yanse = imagecolorallocate($image, 0x00, 0x00, 0x00);<br />
//横轴<br />
imageline ( $image, $zuo, $img_gao-$xia, $img_kuan-$you/2, $img_gao-$xia, $zuobiao_yanse);<br />
//纵轴<br />
imageline ( $image, $zuo, $shang/2, $zuo, $img_gao-$xia, $zuobiao_yanse);<br />
<br />
<br />
<br />
//纵轴刻度，纵轴上共标注4个点，所以这里分别计算即可<br />
imageline ( $image, $zuo, $shang, $zuo+6, $shang, $zuobiao_yanse);<br />
imagestring ( $image, 3, $zuo/4, $shang,round($zuidashujuzhi), $zuobiao_yanse);<br />
imageline ( $image, $zuo, $shang+($img_gao-$shang-$xia)*1/4, $zuo+6, round($shang+($img_gao-$shang-$xia)*1/4), $zuobiao_yanse);<br />
imagestring ( $image, 3, $zuo/4, $shang+($img_gao-$shang-$xia)*1/4,round($zuidashujuzhi*3/4), $zuobiao_yanse);<br />
imageline ( $image, $zuo, $shang+($img_gao-$shang-$xia)*2/4, $zuo+6, $shang+($img_gao-$shang-$xia)*2/4, $zuobiao_yanse);<br />
imagestring ( $image, 3, $zuo/4, $shang+($img_gao-$shang-$xia)*2/4,round($zuidashujuzhi*2/4), $zuobiao_yanse);<br />
imageline ( $image, $zuo, $shang+($img_gao-$shang-$xia)*3/4, $zuo+6, $shang+($img_gao-$shang-$xia)*3/4, $zuobiao_yanse);<br />
imagestring ( $image, 3, $zuo/4, $shang+($img_gao-$shang-$xia)*3/4,round($zuidashujuzhi*1/4), $zuobiao_yanse);<br />
<br />
<br />
<br />
//得到每个柱的高度<br />
for($i=0;$i<count($shuju);$i++){<br />
array_push ($zhugaodu, round(($img_gao-$shang-$xia)*$shuju[$i]/$zuidashujuzhi));<br />
}<br />
//画数据柱<br />
$shuju_yanse_int=0;<br />
for($i=0;$i<count($shuju);$i++){<br />
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]);<br />
//因为只定义了10种颜色，所以这里做一个循环　　<br />
if($shuju_yanse_int==9){<br />
$shuju_yanse_int=0;<br />
}else{<br />
$shuju_yanse_int++;<br />
}<br />
}<br />
//标注数据柱上方数据值<br />
for($i=0;$i<count($shuju);$i++){<br />
imagestring ( $image, 1, $zuo+$jiange+$i*($kuan+$jiange)+2,$shang+($img_gao-$shang-$xia)-$zhugaodu[$i]-10,$shuju[$i], $zuobiao_yanse);<br />
}<br />
header('Content-type: image/png');<br />
imagepng($image);<br />
imagedestroy($image);<br />
?>

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这样子可以生成