1 ClassChart{2 private $image; //定义图像

3 private $title; //定义标题

4 private $ydata; //定义Y轴数据

5 private $xdata; //定义X轴数据

6 private $seriesName; //定义每个系列数据的名称

7 private $color; //定义条形图颜色

8 private $bgcolor; //定义图片背景颜色

9 private $width; //定义图片的宽

10 private $height; //定义图片的长

11

12 /*

13 * 构造函数14 * String title 图片标题15 * Array xdata 索引数组，X轴数据16 * Array ydata 索引数组，数字数组,Y轴数据17 * Array series_name 索引数组，数据系列名称18 */

19 function __construct($title,$xdata,$ydata,$seriesName) {20 $this->title = $title;21 $this->xdata = $xdata;22 $this->ydata = $ydata;23 $this->seriesName = $seriesName;24 $this->color = array('#058DC7', '#50B432', '#ED561B', '#DDDF00', '#24CBE5', '#64E572', '#FF9655', '#FFF263', '#6AF9C4');25 }26

27 /*

28 * 公有方法，设置条形图的颜色29 * Array color 颜色数组,元素取值为'#058DC7'这种形式30 */

31 function setBarColor($color){32 $this->color = $color;33 }34 /*

35 * 绘制折线图36 */

37 public functionpaintLineChart() {38 $ydataNum = $this->arrayNum($this->ydata); //取得数据分组的个数

39 $max = $this->arrayMax($this->ydata); //取得所有呈现数据的最大值

40 $max = ($max > 100)? $max : 100;41 $multi = $max/100; //如果最大数据是大于100的则进行缩小处理

42 $barHeightMulti = 2.2; //条形高缩放的比例

43 $lineWidth = 50;44 $chartLeft = (1+strlen($max))*12; //设置图片左边的margin

45

46 $lineY = 250; //初始化条形图的Y的坐标47 // 设置图片的宽、高48 //$this->width = $lineWidth*count($this->xdata) + $chartLeft - $lineWidth/1.6;

49

50 $margin = 10; //小矩形描述右边margin

51 $recWidth = 20; //小矩形的宽

52 $recHeight = 15; //小矩形的高

53 $space = 20; //小矩形与条形图的间距

54 $tmpWidth = 0;55 //设置图片的宽、高

56 $lineChartWidth = $lineWidth*count($this->xdata) + $chartLeft - $lineWidth/1.6;57 //两个系列数据以上的加上小矩形的宽

58 if($ydataNum > 1) {59 $tmpWidth = $this->arrayLengthMax($this->seriesName)*10*4/3 + $space + $recWidth + + $margin;60 }61 $this->width = $lineChartWidth + $tmpWidth;62

63 $this->height = 300;64 $this->image = imagecreatetruecolor($this->width ,$this->height); //准备画布

65 $this->bgcolor = imagecolorallocate($this->image,255,255,255); //图片的背景颜色66

67 // 设置条形图的颜色

68 $color = array();69 foreach($this->color as $col) {70 $col = substr($col,1,strlen($col)-1);71 $red = hexdec(substr($col,0,2));72 $green = hexdec(substr($col,2,2));73 $blue = hexdec(substr($col,4,2));74 $color[] = imagecolorallocate($this->image ,$red, $green, $blue);75 }76

77 //设置线段的颜色、字体的颜色、字体的路径

78 $lineColor = imagecolorallocate($this->image ,0xcc,0xcc,0xcc);79 $fontColor = imagecolorallocate($this->image, 0x95,0x8f,0x8f);80 $fontPath = 'font/simsun.ttc';81

82 imagefill($this->image,0,0,$this->bgcolor); //绘画背景83

84 // 绘画图的分短线与左右边线

85 for($i = 0; $i < 6; $i++) {86 imageline($this->image,$chartLeft-10,$lineY-$barHeightMulti*$max/5/$multi*$i,$lineChartWidth,$lineY-$barHeightMulti*$max/5/$multi*$i,$lineColor);87 imagestring($this->image,4,5,$lineY-$barHeightMulti*$max/5/$multi*$i-8,floor($max/5*$i),$fontColor);88 }89 imageline($this->image,$chartLeft-10,30,$chartLeft-10,$lineY,$lineColor);90 imageline($this->image,$lineChartWidth-1,30,$lineChartWidth-1,$lineY,$lineColor);91 $style = array($lineColor,$lineColor,$lineColor,$lineColor,$lineColor,$this->bgcolor,$this->bgcolor,$this->bgcolor,$this->bgcolor,$this->bgcolor);92 imagesetstyle($this->image,$style);93

94 //绘制折线图的分隔线(虚线)

95 foreach($this->xdata as $key => $val) {96 $lineX = $chartLeft + 3 + $lineWidth*$key;97 imageline($this->image,$lineX,30,$lineX,$lineY,IMG_COLOR_STYLED);98 }99

100 //绘画图的折线

101 foreach($this->ydata as $key => $val) {102 if($ydataNum == 1) {103 //一个系列数据时

104 if($key == count($this->ydata) - 1 ) break;105 $lineX = $chartLeft + 3 + $lineWidth*$key;106 $lineY2 = $lineY-$barHeightMulti*($this->ydata[$key+1])/$multi;107

108 //画折线

109 if($key == count($this->ydata) - 2) {110 imagefilledellipse($this->image,$lineX+$lineWidth,$lineY2,10,10,$color[0]);111 }112 imageline($this->image,$lineX,$lineY-$barHeightMulti*$val/$multi,$lineX+$lineWidth,$lineY2,$color[0]);113 imagefilledellipse($this->image,$lineX,$lineY-$barHeightMulti*$val/$multi,10,10,$color[0]);114 }elseif($ydataNum > 1) {115 //多个系列的数据时

116 foreach($val as $ckey => $cval) {117

118 if($ckey == count($val) - 1 ) break;119 $lineX = $chartLeft + 3 + $lineWidth*$ckey;120 $lineY2 = $lineY-$barHeightMulti*($val[$ckey+1])/$multi;121 //画折线

122 if($ckey == count($val) - 2) {123 imagefilledellipse($this->image,$lineX+$lineWidth,$lineY2,10,10,$color[$key%count($this->color)]);124 }125 imageline($this->image,$lineX,$lineY-$barHeightMulti*$cval/$multi,$lineX+$lineWidth,$lineY2,$color[$key%count($this->color)]);126 imagefilledellipse($this->image,$lineX,$lineY-$barHeightMulti*$cval/$multi,10,10,$color[$key%count($this->color)]);127 }128 }129

130 }131

132 //绘画条形图的x坐标的值

133 foreach($this->xdata as $key => $val) {134 $lineX = $chartLeft + $lineWidth*$key + $lineWidth/3 - 20;135 imagettftext($this->image,10,-65,$lineX,$lineY+15,$fontColor,$fontPath,$this->xdata[$key]);136 }137

138 //两个系列数据以上时绘制小矩形及之后文字说明

139 if($ydataNum > 1) {140 $x1 = $lineChartWidth + $space;141 $y1 = 20;142 foreach($this->seriesName as $key => $val) {143 imagefilledrectangle($this->image,$x1,$y1,$x1+$recWidth,$y1+$recHeight,$color[$key%count($this->color)]);144 imagettftext($this->image,10,0,$x1+$recWidth+5,$y1+$recHeight-2,$fontColor,$fontPath,$this->seriesName[$key]);145 $y1 += $recHeight + 10;146 }147 }148

149 //绘画标题

150 $titleStart = ($this->width - 5.5*strlen($this->title))/2;151 imagettftext($this->image,11,0,$titleStart,20,$fontColor,$fontPath,$this->title);152

153 //输出图片

154 header("Content-Type:image/png");155 imagepng ( $this->image );156 }157

158

159 /*

160 * 私有方法，当数组为二元数组时，统计数组的长度161 * Array arr 要做统计的数组162 */

163 private function arrayNum($arr) {164 $num = 0;165 if(is_array($arr)) {166 $num++;167 for($i = 0; $i < count($arr); $i++){168 if(is_array($arr[$i])) {169 $num = count($arr);170 break;171 }172 }173 }174 return $num;175 }176

177 /*

178 * 私有方法，计算数组的深度179 * Array arr 数组180 */

181 private function arrayDepth($arr) {182 $num = 0;183 if(is_array($arr)) {184 $num++;185 for($i = 0; $i < count($arr); $i++){186 if(is_array($arr[$i])) {187 $num += $this->arrayDepth($arr[$i]);188 break;189 }190 }191 }192 return $num;193 }194

195 /*

196 * 私有方法，找到一组中的最大值197 * Array arr 数字数组198 */

199 private function arrayMax($arr) {200 $depth = $this->arrayDepth($arr);201 $max = 0;202 if($depth == 1) {203 rsort($arr);204 $max = $arr[0];205 }elseif($depth > 1) {206 foreach($arr as $val) {207 if(is_array($val)) {208 if($this->arrayMax($val) > $max) {209 $max = $this->arrayMax($val);210 }211 }else{212 if($val > $max){213 $max = $val;214 }215 }216 }217 }218 return $max;219 }220

221 /*

222 * 私有方法，求数组的平均值223 * Array arr 数字数组224 */

225 function arrayAver($arr) {226 $aver = array();227 foreach($arr as $val) {228 if(is_array($val)) {229 $aver = array_merge($aver,$val);230 }else{231 $aver[] = $val;232 }233 }234 return array_sum($aver)/count($aver);235 }236

237 /*

238 * 私有方法，求数组中元素长度最大的值239 * Array arr 字符串数组,必须是汉字240 */

241 private function arrayLengthMax($arr) {242 $length = 0;243 foreach($arr as $val) {244 $length = strlen($val) > $length ? strlen($val) : $length;245 }246 return $length/3;247 }248

249 //析构函数

250 function__destruct(){251 imagedestroy($this->image);252 }253 }