-
-
/** - * php 柱状图 imagefilledrectugle函数用例
- * by bbs.it-home.org
- */
- function createimage($data,$twidth,$tspace,$height){
- header("content-type:image/jpeg");
- $dataname = array();
- $datavalue = array();//data里面的值
- $i = 0;
- $j = 0;
- $k = 0;
- $num = sizeof($data);
foreach($data as $key => $val){ - $dataname[] = $key;
- $datavalue[] = $val;
- }
$width = $num * ($twidth + $tspace) + 20 ;//获取图像的宽度 - $im = imagecreate($width,$height);//创建图像
$bgcolor = imagecolorallocate($im,255,255,255);//背景色 - $jcolor = imagecolorallocate($im,255,255,0);//矩形的背景色
- $acolor = imagecolorallocate($im,0,0,0);//线的颜色
imageline($im,25,$height-20,$width-5,$height -20,$acolor);//X轴
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- imageline($im,25,$height-20,25,2,$acolor);//Y轴
- while($iimagefilledrectangle($im,$i*($tspace+$twidth)+40,$height-$datavalue[$i]-20,$i*($twidth+$tspace)+$tspace+40,$height-20,$jcolor);//画矩形
- imagestring($im,3,$i*($tspace+$twidth)+40+$twidth/2,$height-$datavalue[$i]-35,$datavalue[$i],$acolor);//在柱子上面写出值
- imagestring($im,3,$i*($tspace+$twidth)+40+$twidth/2,$height-15,$dataname[$i],$acolor);//在柱子下面写出值
- $i ++;
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} - while($j imageline($im,25,($height-20)-$j*8,28,($height-20)-$j*8,$acolor);//画出刻度
- imagestring($im,2,5,($height-30)-$j*8,$j*10,$acolor);//标出刻度值
- $j = $j +10;
- }
- imagejpeg($im);
- }
- $data =array("1"=>25,"2"=>30,"3" =>21 );
- createImage($data,40,40,300);
- ?>
-
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