Home  >  Article  >  Backend Development  >  PHP generate histogram example code

PHP generate histogram example code

WBOY
WBOYOriginal
2016-07-25 08:53:151107browse
  1. /*PHP生成柱状图*/

  2. function createImage($data,$twidth,$tspace,$height){
  3. $dataName = array();
  4. $dataValue = array();
  5. $i = 0;
  6. $j = 0;
  7. $k = 0;
  8. $num = sizeof($data);
  9. foreach($data as $key => $val){

  10. $dataName[] = $key;
  11. $dataValue[] = $val;
  12. }
  13. $maxnum = max($data);
  14. $width = ($twidth + $tspace) * $num + 4;//image's width
  15. $im = imagecreate($width + 40,$height+20);
  16. $lineColor = imagecolorallocate($im,12,12,12);
  17. $bgColor = imagecolorallocate($im,255,233,233);
  18. $tColor = imagecolorallocate($im,123,200,56);
  19. imagefill($im,0,0,$bgColor);
  20. imageline ( $im, 30, 0, 30, $height - 2, $lineColor);
  21. imageline ( $im, 30, $height - 2, $width + 30 -2 , $height - 2,$lineColor);
  22. while($i imagefilledrectangle ( $im, $i * ($tspace+$twidth) + 40, $height - $dataValue[$i], $i * ($tspace+$twidth) + 40 + $twidth, $height - 3, $tColor);
  23. imagestringup ( $im, 4, $i * ($tspace+$twidth) + $twidth/2 + 30, $height - 10, $dataName[$i]."(".$dataValue[$i].")", $lineColor);
  24. $i++;
  25. }
  26. while($j imagestringup ( $im, 4, 2, $height - $j * 10 + 10, $j * 10, $lineColor);
  27. $j = $j + 10;
  28. }
  29. while($k if($k != 0)
  30. imageline ( $im, 28, $height - $k * 10, 32 , $height - $k * 10,$lineColor);
  31. $k = $k + 10;
  32. }
  33. imagepng($im);
  34. }
  35. //柱状图调用方法

  36. header("content-type:image/png");
  37. $data = array("Yahoo" => 140, "Google" => 200,"Microsoft" => 120,"IBM" => 80,"Sun System" => 350,"Inter" => 20);
  38. 将这行中数据改成你的即可:$data = array("Yahoo" => 100, "Google" => 260,"Microsoft" => 320,"IBM" => 250,"Sun System" => 150,"Inter" => 220);
  39. createImage($data,50,25,500);
  40. ?>
复制代码

柱状图,如下: PHP generate histogram example code



Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn