php作图柱状图

php绘制柱状图

效果：

<?php /***  * @project Bar Graph Program  * @license GPL  * @package  * @file GrapBar.php  * @date 2007-4-3  * @version 1.0  * @last modified   * 定义 柱状图（柱形图） 类  *  * 注意，使用前请确保字体路径存在并允许访问，如果出错，还要检查在php.ini配置中的open_basedir项，如果没此路径请添加，或在程序中设置包含  *  * 智能化的柱状图程序，用于报表等  *  ***/ define("DEFAULT_FONT_PATH", "c:/windows/fonts/simhei.ttf");class SingleBar{ private $_x; private $_y; private $_h; public $_l = 50; private $_w = null; private $_srcPoints = array(); private $_points = array();  public function __construct($x, $y, $h, $l = 50, $w = null) {  $this->_x = $x;  $this->_y = $y;  $this->_h = $h;  $this->_l = $l;  $this->_w = $w;  $this->_srcPoints = $this->getSrcPoints();  $this->_points = $this->getPoints(); }  public function getSrcPoints() {  return array(   array($this->_x                 , $this->_y),   array($this->_x+$this->_l       , $this->_y),   array($this->_x+(1.35*$this->_l), $this->_y-(0.35*$this->_l)),   array($this->_x+(0.35*$this->_l), $this->_y-(0.35*$this->_l)),   array($this->_x                 , $this->_y+$this->_h),   array($this->_x+$this->_l       , $this->_y+$this->_h),   array($this->_x+(1.35*$this->_l), $this->_y+$this->_h-(0.35*$this->_l))  ); }  public function getPoints() {  $points = array();  foreach($this->_srcPoints as $key => $val)  {   $points[] = $val[0];   $points[] = $val[1];  }  return $points; }  public function getTopPoints() {  return array_slice($this->_points, 0, 8); //顶坐标 }  public function getBelowPoints() {  return array_merge(array_slice($this->_points, 0, 2), array_slice($this->_points, 8, 4), array_slice($this->_points, 2, 2)); //下坐标 }  public function getRightSidePoints() {  return array_merge(array_slice($this->_points, 2, 2), array_slice($this->_points, 10, 4), array_slice($this->_points, 4, 2)); //右侧坐标 }  public function draw($image, $topColor, $belowColor, $sideColor, $borderColor = null, $type = 'LEFT') {  if (is_null($borderColor))  {   $borderColor = 0xcccccc;  }    $top_rgb = $this->getRGB($topColor);  $below_rgb = $this->getRGB($belowColor);  $side_rgb = $this->getRGB($sideColor);  $top_color = imagecolorallocate($image, $top_rgb['R'], $top_rgb['G'], $top_rgb['B']);  $below_color = imagecolorallocate($image, $below_rgb['R'], $below_rgb['G'], $below_rgb['B']);  $side_color = imagecolorallocate($image, $side_rgb['R'], $side_rgb['G'], $side_rgb['B']);    imagefilledpolygon($image, $this->getTopPoints(), 4, $top_color); //画顶面  imagepolygon($image, $this->getTopPoints(), 4, $borderColor); //画顶面边线    imagefilledpolygon($image, $this->getBelowPoints(), 4, $below_color); //画下面  imagepolygon($image, $this->getBelowPoints(), 4, $borderColor); //画下面边线    if ($type == 'LEFT')  {   imagefilledpolygon($image, $this->getRightSidePoints(), 4, $side_color); //画右侧面   imagepolygon($image, $this->getRightSidePoints(), 4, $borderColor); //画侧面边线  }  }  public function getRGB($color) {  $ar = array();  $color = hexdec($color);  $ar['R'] = ($color>>16) & 0xff;  $ar['G'] = ($color>>8) & 0xff;  $ar['B'] = ($color) & 0xff;  return $ar; }}class Bar{ private $_W; private $_H; private $_bgColor = "ffffff"; private $_barHeights = array(); private $_barTexts = array(); private $_barColors = array(); public $_title; public $_paddingTop = 30; public $_paddingBottom = 100; public $_paddingLeft = 45; public $_paddingRight = 2; public $_barL = 50; public $image;  public function __construct($imgW, $imgH, $barHeights, $barTexts = null, $barColors = null) {  $this->_W = $imgW;  $this->_H = $imgH;  $this->_barHeights = $barHeights;  $this->_barTexts   = $barTexts;  $this->_barColors  = $barColors;  $this->_paddingBottom = $this->resetPaddingBottom();  $this->_H = $this->resetHeight();  $this->image = imagecreatetruecolor($this->_W, $this->_H); }  public function stroke() {  $this->drawBg();  $this->drawBars();  $this->drawTitle();  $this->drawLables();  ob_start();  //header("Content-type: image/png");  //imagepng($this->image);  header("Content-type: " . image_type_to_mime_type(IMAGETYPE_JPEG));        imagejpeg($this->image);  imagedestroy($this->image); }  public function drawBg() {  $img_w = $this->_W;  $img_h = $this->_H;  $paddingTop    = $this->_paddingTop;  $paddingBottom = $this->_paddingBottom;  $paddingLeft   = $this->_paddingLeft;  $paddingRight  = $this->_paddingRight;  $rgb = $this->getRGB($this->_bgColor);  $bg = imagecolorallocate($this->image,$rgb['R'], $rgb['G'], $rgb['B']);  imagefilledrectangle($this->image, 0, 0, $img_w, $img_h, $bg);  $side_bg = imagecolorallocatealpha($this->image, 220, 220, 220, 75);  $side_bg2 = imagecolorallocate($this->image, 220, 220, 220);  $border_color = imagecolorallocate($this->image, 190, 190, 190);  $line_color = imagecolorallocate($this->image, 236, 236, 236);  $dial_color = imagecolorallocate($this->image, 131, 131, 131);    $x1 = $paddingLeft;  $y1 = $paddingTop;  $x2 = $img_w - $paddingRight;  $y2 = $img_h - $paddingBottom;  imagerectangle($this->image, $x1, $y1, $x2, $y2, $border_color);  imagefilledpolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10,  $x1,$y2,  $x1,$y1), 4, $side_bg);        imagepolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10,  $x1,$y2,  $x1,$y1), 4, $border_color);  imagefilledpolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10,  $x2,$y2,  $x1,$y2), 4, $side_bg);        imagepolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10,  $x2,$y2,  $x1,$y2), 4, $border_color);  imageline($this->image, $x1, $y2, $x2, $y2, $side_bg2);    $total_h = $img_h - $paddingTop - $paddingBottom;  $every_h = $total_h/11;  for($i=1; $iimage, $x1, $y1+($every_h*$i), $x2, $y1+($every_h*$i), $line_color); //画网线  }    $max_h = max($this->_barHeights);  for($i=1; $iimage, $x1-5-3, $y1+10+($every_h*$i), $x1-3+1, $y1+10+($every_h*$i), $dial_color); //画刻度线   imagestring($this->image, 3, $x1-5-3-$str_w-1, $y1+10+($every_h*$i)-5, $value, 0x000000);  } }   public function drawBars() {  $counts = count($this->_barHeights);  if (empty($this->_barColors))  {   $color = $this->setColor();   $this->_barColors = array_slice($color, 0, $counts);   //shuffle($this->_barColors);  }  $every_w = ($this->_W - $this->_paddingLeft - $this->_paddingRight)/$counts; //每一段宽  $barL = $every_w;  $barL = ($barL > $this->_barL*1.35+6) ? $this->_barL : $barL/1.35 - 6;  $max_h = max($this->_barHeights);  $ruler_h = $this->_H - $this->_paddingTop - $this->_paddingBottom; //标尺总高度  $stander_h = $ruler_h - ($ruler_h/11); //标尺10等分的高度  $i = 0;  foreach ($this->_barHeights as $val)  {   $h = ($stander_h/$max_h)*$val;   $x = $this->_paddingLeft + ($every_w*$i) + (($every_w - ($barL*1.35))/2);;   $y = $this->_H - $this->_paddingBottom + 10 - $h;   //$t_color = $this->_barColors[$i];   $b_color = $this->_barColors[$i];   //$s_color = $this->_barColors[$i];      $rgb = $this->getRGB($this->_barColors[$i]);   $R = $rgb['R'] * 0.7;   $G = $rgb['G'] * 0.7;   $B = $rgb['B'] * 0.7;      $c1 = $R > 0 ? dechex($R) : '00';   $c2 = $G > 0 ? dechex($G) : '00';   $c3 = $B > 0 ? dechex($B) : '00';   $t_color = $b_color;   $s_color = $c1. $c2 . $c3;   $SingleBar = new SingleBar($x, $y, $h, $barL);   $SingleBar->draw($this->image, $t_color, $b_color, $s_color);   $i++;  } }  public function drawTitle() {  if (empty($this->_title))  {   return;  }  $font = 5;  $font_w = imagefontwidth($font);  $len = strlen($this->_title);  $x = ($this->_W + $this->_paddingLeft - $this->_paddingRight)/2;  $x -= ($len*$font_w)/2;  $y = ($this->_paddingTop - $font_w)/2 + 12;  //imagestring($this->image, $font, $x, $y, $title, 0x000000);  imagettftext($this->image, 12, 0, $x, $y, 0x000000, DEFAULT_FONT_PATH, $this->_title); }  public function drawLables() {  $x1 = $this->_paddingLeft - 5;  $y1 = $this->_H - $this->_paddingBottom + 20;  $x2 = $this->_W - $this->_paddingRight;  $y2 = $this->_H - 10;  //imagefilledrectangle($this->image, $x1, $y1, $x2, $y2, 0xffffff);  imagerectangle($this->image, $x1, $y1, $x2, $y2, 0x000000);  $space = 5;  $x = $x1 + 3;  $y = $y1 + 3;  foreach ($this->_barTexts as $key => $val)  {   $color = $this->_barColors[$key];   $rgb = $this->getRGB($color);   $bg = imagecolorallocate($this->image,$rgb['R'], $rgb['G'], $rgb['B']);   imagefilledrectangle($this->image, $x, $y, $x+12, $y+12, $bg); //绘12*12的矩形         imagerectangle($this->image, $x, $y, $x+12, $y+12, 0x000000); //绘12*12的矩形框   imagettftext($this->image, 12, 0, $x+12+3, $y+12, 0x000000, DEFAULT_FONT_PATH, $val);   $x += 12 + $space + (strlen($val)*8) + $space;   if ($x + (strlen($val)*8) >= $this->_W - $this->_paddingLeft - $this->_paddingRight)   {    $x = $x1 + 3;    $y = $y + 12 + 3;   }  } }  public function resetPaddingBottom() {  $ruler_w = $this->_W - $this->_paddingLeft - $this->_paddingRight;  $label_w = $this->getLableTotalWidth();  $lines = ceil($label_w / $ruler_w);  $h = 12 * $lines + (3 * ($lines + 1)) + 30;  return $h; }  public function resetHeight() {  $padding_bottom = $this->resetPaddingBottom();  if ($this->_H - $padding_bottom _H; }  public function getLableTotalWidth() {  $counts = count($this->_barTexts);  $space = 5;  $total_len = 0;  foreach ($this->_barTexts as $val)  {   $total_len += strlen($val);  }    $tx_w = ($total_len * 9) + ((12 + 3 + $space) * $counts);  return $tx_w; }  public function setBg($color) {  $this->_bgColor = $color; }  public function setTitle($title) {  $this->_title = $title; }  public function setColor() {  $ar = array('ff', '00', '33', '66', '99', 'cc');  $color = array();  for ($i=0; $i>16) & 0xff;  $ar['G'] = ($color>>8) & 0xff;  $ar['B'] = ($color) & 0xff;  return $ar; }}/***/$bar = new Bar(500, 300, array(600, 300, 30, 500, 400, 250, 350, 360), array('AAAAA', 'BBBBB', 'CCCCC', 'DDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGGG', 'HHHHHHHHH'));$bar->setTitle('打造完美柱状图!');$bar->stroke();/***/?>

1楼u0100288694小时前

楼主总结的很详细，学习了 。nn欢迎关注，互相交流：http://blog.csdn.net/u010028869