php中如何使用GD绘制柱状图

原创|其它|编辑:郝浩|2009-06-19 11:38:35.000|阅读 784 次

概述:本文主要介绍php GD绘制24小时柱状图的方法。

# 界面/图表报表/文档/IDE等千款热门软控件火热销售中 >>

  h24 这个函数就是生成柱状图的 函数需要一个字符串作为参数 这个参数的格式为:每小时的数量按照从0-23点的顺序加逗号连接在一起 可以看例子里面的
  80,250,430,134,35,60,233,90,263,225,120,59,151,677,340,221,550,300,229,97,230,123,133,87

一共24个数字 一个都不能少哦少了要出错 你可以修改函数判断一下

  [复制此代码]CODE:

      <?PHP

  /*
  24小时柱状图
  作者:taokey
  QQ:29611705
  */
  function h24($str){
  $hour = explode(",",$str);
  $hmax = max($hour);
  $ppix = 150/$hmax;
  //计算柱状图高度
  $h0 = 190-$hour[0]*$ppix;
  $h1 = 190-$hour[1]*$ppix;
  $h2 = 190-$hour[2]*$ppix;
  $h3 = 190-$hour[3]*$ppix;
  $h4 = 190-$hour[4]*$ppix;
  $h5 = 190-$hour[5]*$ppix;
  $h6 = 190-$hour[6]*$ppix;
  $h7 = 190-$hour[7]*$ppix;
  $h8 = 190-$hour[8]*$ppix;
  $h9 = 190-$hour[9]*$ppix;
  $h10 = 190-$hour[10]*$ppix;
  $h11 = 190-$hour[11]*$ppix;
  $h12 = 190-$hour[12]*$ppix;
  $h13 = 190-$hour[13]*$ppix;
  $h14 = 190-$hour[14]*$ppix;
  $h15 = 190-$hour[15]*$ppix;
  $h16 = 190-$hour[16]*$ppix;
  $h17 = 190-$hour[17]*$ppix;
  $h18 = 190-$hour[18]*$ppix;
  $h19 = 190-$hour[19]*$ppix;
  $h20 = 190-$hour[20]*$ppix;
  $h21 = 190-$hour[21]*$ppix;
  $h22 = 190-$hour[22]*$ppix;
  $h23 = 190-$hour[23]*$ppix;
  //创建一个img
  $img = imagecreate(755,210);
  //背景
  $bgc = imagecolorallocate ($img, 245, 250, 254);
  //黑色
  $bc = imagecolorallocate($img,0,0,0);
  //画竖轴
  imageline($img,15,30,15,189, $bc);
  //画横轴
  imageline($img,15,190,750,190, $bc);
  //画竖轴点
  for($i=39,$j=10;$i<189;$i=$i+15,$j--){
  imageline($img,13,$i,15,$i, $bc);
  imagestring($img,1,1,$i-4,$j."x", $bc);
  }
  //画横轴点
  $t = true;
  for($i=31,$j=29;$i<750;$i=$j+1,$j=$j+15){
  if($t){
  $x=$i;
  $t=false;
  }else{
  $x=$i+1;
  $t=true;
  }
  imageline($img,$x,190,$x,192, $bc);
  }
  //竖轴标记
  $x = ceil($hmax/10);
  imagestring($img,2,10,15,"X=".$x,$bc);
  //竖轴标记
  //0点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,31,$h0,45,189,$color);
  imagestring($img,1,31,$h0-10,$hour[0],$color);
  imagechar($img,1,36,195,0,$bc);
  //1点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,61,$h1,75,189,$color);
  imagestring($img,1,61,$h1-10,$hour[1],$color);
  imagechar($img,1,66,195,1,$bc);
  //2点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,91,$h2,105,189,$color);
  imagestring($img,1,91,$h2-10,$hour[2],$color);
  imagechar($img,1,96,195,2,$bc);
  //3点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,121,$h3,135,189,$color);
  imagestring($img,1,121,$h3-10,$hour[3],$color);
  imagechar($img,1,126,195,3,$bc);
  //4点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,151,$h4,165,189,$color);
  imagestring($img,1,151,$h4-10,$hour[4],$color);
  imagechar($img,1,156,195,4,$bc);
  //5点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,181,$h5,195,189,$color);
  imagestring($img,1,181,$h5-10,$hour[5],$color);
  imagechar($img,1,186,195,5,$bc);
  //6点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,211,$h6,225,189,$color);
  imagestring($img,1,211,$h6-10,$hour[6],$color);
  imagechar($img,1,216,195,6,$bc);
  //7点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,241,$h7,255,189,$color);
  imagestring($img,1,241,$h7-10,$hour[7],$color);
  imagechar($img,1,246,195,7,$bc);
  //8点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,271,$h8,285,189,$color);
  imagestring($img,1,271,$h8-10,$hour[8],$color);
  imagechar($img,1,276,195,8,$bc);
  //9点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,301,$h9,315,189,$color);
  imagestring($img,1,301,$h9-10,$hour[9],$color);
  imagechar($img,1,306,195,9,$bc);
  //10点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,331,$h10,345,189,$color);
  imagestring($img,1,331,$h10-10,$hour[10],$color);
  imagestring($img,1,334,195,10,$bc);
  //11点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,361,$h11,375,189,$color);
  imagestring($img,1,361,$h11-10,$hour[11],$color);
  imagestring($img,1,364,195,11,$bc);
  //12点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,391,$h12,405,189,$color);
  imagestring($img,1,391,$h12-10,$hour[12],$color);
  imagestring($img,1,394,195,12,$bc);
  //13点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,421,$h13,435,189,$color);
  imagestring($img,1,421,$h13-10,$hour[13],$color);
  imagestring($img,1,424,195,13,$bc);
  //14点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,451,$h14,465,189,$color);
  imagestring($img,1,451,$h14-10,$hour[14],$color);
  imagestring($img,1,454,195,14,$bc);
  //15点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,481,$h15,495,189,$color);
  imagestring($img,1,481,$h15-10,$hour[15],$color);
  imagestring($img,1,481,195,15,$bc);
  //16点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,511,$h16,525,189,$color);
  imagestring($img,1,511,$h16-10,$hour[16],$color);
  imagestring($img,1,511,195,16,$bc);
  //17点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,541,$h17,555,189,$color);
  imagestring($img,1,541,$h17-10,$hour[17],$color);
  imagestring($img,1,544,195,17,$bc);
  //18点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,571,$h18,585,189,$color);
  imagestring($img,1,571,$h18-10,$hour[18],$color);
  imagestring($img,1,571,195,18,$bc);
  //19点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,601,$h19,615,189,$color);
  imagestring($img,1,601,$h19-10,$hour[19],$color);
  imagestring($img,1,604,195,19,$bc);
  //20点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,631,$h20,645,189,$color);
  imagestring($img,1,631,$h20-10,$hour[20],$color);
  imagestring($img,1,634,195,20,$bc);
  //21点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,661,$h21,675,189,$color);
  imagestring($img,1,661,$h21-10,$hour[21],$color);
  imagestring($img,1,664,195,21,$bc);
  //22点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,691,$h22,705,189,$color);
  imagestring($img,1,691,$h22-10,$hour[22],$color);
  imagestring($img,1,694,195,22,$bc);
  //23点
  $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
  imagefilledrectangle($img,721,$h23,735,189,$color);
  imagestring($img,1,721,$h23-10,$hour[23],$color);
  imagestring($img,1,724,195,23,$bc);
  //加个边框 加了之后不好看
  //imagerectangle($img, 0, 0, 754, 209, $bc);
  imagepng($img);
  imagedestroy($img);
  }
  $str = isset($_GET['str'])?$_GET['str']:"";
  if($str){
  h24($str);
  }
  ?>


标签:

本站文章除注明转载外,均为本站原创或翻译。欢迎任何形式的转载,但请务必注明出处、不得修改原文相关链接,如果存在内容上的异议请邮件反馈至chenjj@evget.com

文章转载自:IT专家网论坛

为你推荐

  • 推荐视频
  • 推荐活动
  • 推荐产品
  • 推荐文章
  • 慧都慧问
扫码咨询


添加微信 立即咨询

电话咨询

客服热线
023-68661681

TOP