1 ClassChart{2 private $image; //定義圖像

3 private $title; //定義標題

4 private $ydata; //定義Y軸數據

5 private $xdata; //定義X軸數據

6 private $seriesName; //定義每個系列數據的名稱

7 private $color; //定義條形圖顏色

8 private $bgcolor; //定義圖片背景顏色

9 private $width; //定義圖片的寬

10 private $height; //定義圖片的長

11

12 /*

13 * 構造函數14 * String title 圖片標題15 * Array xdata 索引數組，X軸數據16 * Array ydata 索引數組，數字數組,Y軸數據17 * Array series_name 索引數組，數據系列名稱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，設置條形圖的顏色29 * Array color 顏色數組,元素取值為'#058DC7'這種形式30 */

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

35 * 繪制折線圖36 */

37 public functionpaintLineChart() {38 $ydataNum = $this->arrayNum($this->ydata); //取得數據分組的個數

39 $max = $this->arrayMax($this->ydata); //取得所有呈現數據的最大值

40 $max = ($max > 100)? $max : 100;41 $multi = $max/100; //如果最大數據是大于100的則進行縮小處理

42 $barHeightMulti = 2.2; //條形高縮放的比例

43 $lineWidth = 50;44 $chartLeft = (1+strlen($max))*12; //設置圖片左邊的margin

45

46 $lineY = 250; //初始化條形圖的Y的坐標47 // 設置圖片的寬、高48 //$this->width = $lineWidth*count($this->xdata) + $chartLeft - $lineWidth/1.6;

49

50 $margin = 10; //小矩形描述右邊margin

51 $recWidth = 20; //小矩形的寬

52 $recHeight = 15; //小矩形的高

53 $space = 20; //小矩形與條形圖的間距

54 $tmpWidth = 0;55 //設置圖片的寬、高

56 $lineChartWidth = $lineWidth*count($this->xdata) + $chartLeft - $lineWidth/1.6;57 //兩個系列數據以上的加上小矩形的寬

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); //準備畫布

65 $this->bgcolor = imagecolorallocate($this->image,255,255,255); //圖片的背景顏色66

67 // 設置條形圖的顏色

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 //設置線段的顏色、字體的顏色、字體的路徑

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); //繪畫背景83

84 // 繪畫圖的分短線與左右邊線

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 //繪制折線圖的分隔線(虛線)

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 //繪畫圖的折線

101 foreach($this->ydata as $key => $val) {102 if($ydataNum == 1) {103 //一個系列數據時

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 //畫折線

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 //多個系列的數據時

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 //畫折線

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 //繪畫條形圖的x坐標的值

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 //兩個系列數據以上時繪制小矩形及之后文字說明

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 //繪畫標題

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

153 //輸出圖片

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

158

159 /*

160 * 私有方法，當數組為二元數組時，統計數組的長度161 * Array arr 要做統計的數組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，計算數組的深度179 * Array arr 數組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，找到一組中的最大值197 * Array arr 數字數組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，求數組的平均值223 * Array arr 數字數組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，求數組中元素長度最大的值239 * Array arr 字符串數組,必須是漢字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 //析構函數

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

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