用GD图库生成横竖柱状图折线图的类

最近写的一个GD图库用以生成横竖柱状图和折线图的类库,算是一个教学例程吧  Class ImageReport{ var $X;//图片大小X轴 var $Y;//图片大小Y轴 var $R;//背影色R值 var $G;//...G. var $B;//...B. var $TRANSPARENT;//是否透明1或0 var $IMAGE;//图片对像 //------------------- var $ARRAYSPLIT;//指定用于分隔数值的符号 var $ITEMARRAY;//数值 var $REPORTTYPE;//图表类型,1为竖柱形2为横柱形3为折线形 var $BORDER;//距离 //------------------- var $FONTSIZE;//字体大小 var $FONTCOLOR;//字体颜色 //--------参数设置函数 function setImage($SizeX,$SizeY,$R,$G,$B,$Transparent){ $this->X=$SizeX;  $this->Y=$SizeY;  $this->R=$R;  $this->G=$G;  $this->B=$B;  $this->TRANSPARENT=$Transparent;  }  function setItem($ArraySplit,$ItemArray,$ReportType,$Border){  $this->ARRAYSPLIT=$ArraySplit;  $this->ITEMARRAY=$ItemArray;  $this->REPORTTYPE=$ReportType;  $this->BORDER=$Border;  }  function setFont($FontSize){  $this->FONTSIZE=$FontSize;  }  //----------------主体  function PrintReport(){  Header( "Content-type: image/gif");  //建立画布大小  $this->IMAGE=ImageCreate($this->X,$this->Y);  //设定画布背景色  $background=ImageColorAllocate($this->IMAGE,$this->R,$this->G,$this->B);  if($this->TRANSPARENT=="1"){  //背影透明  Imagecolortransparent($this->IMAGE,$background);  }else{  //如不要透明时可填充背景色  ImageFilledRectangle($this->IMAGE,0,0,$this->X,$this->Y,$background);  }  //参数字体文小及颜色  $this->FONTCOLOR=ImageColorAllocate($this->IMAGE,255-$this->R,255-$this->G,255-$this->B);  Switch ($this->REPORTTYPE){  case "0":  break;  case "1":  $this->imageColumnS();  break;  case "2":  $this->imageColumnH();  break;  case "3":  $this->imageLine();  break;  }  $this->printXY();  $this->printAll();  }  //-----------打印XY坐标轴  function printXY(){  //画XY坐标轴*/  $color=ImageColorAllocate($this->IMAGE,255-$this->R,255-$this->G,255-$this->B);  $xx=$this->X/10;  $yy=$this->Y-$this->Y/10;  ImageLine($this->IMAGE,$this->BORDER,$this->BORDER,$this->BORDER,$this->Y-$this->BORDER,$color);//X轴  ImageLine($this->IMAGE,$this->BORDER,$this->Y-$this->BORDER,$this->X-$this->BORDER,$this->Y-$this->BORDER,$color);//y轴  //Y轴上刻度  $rulerY=$this->Y-$this->BORDER;  while($rulerY>$this->BORDER*2){  $rulerY=$rulerY-$this->BORDER;  ImageLine($this->IMAGE,$this->BORDER,$rulerY,$this->BORDER-2,$rulerY,$color);  }  //X轴上刻度  $rulerX=$rulerX+$this->BORDER;  while($rulerX<($this->X-$this->BORDER*2)){  $rulerX=$rulerX+$this->BORDER;  //ImageLine($this->IMAGE,$this->BORDER,10,$this->BORDER+10,10,$color);  ImageLine($this->IMAGE,$rulerX,$this->Y-$this->BORDER,$rulerX,$this->Y-$this->BORDER+2,$color);  }  } 
//--------------竖柱形图  function imageColumnS(){  $item_array=Split($this->ARRAYSPLIT,$this->ITEMARRAY);  $num=Count($item_array);  $item_max=0;  for ($i=0;$i<$num;$i++){ $item_max=Max($item_max,$item_array[$i]); } $xx=$this->BORDER*2;  //画柱形图  for ($i=0;$i<$num;$i++){ srand((double)microtime()*1000000); if($this->R!=255 && $this->G!=255 && $this->B!=255){  $R=Rand($this->R,200);  $G=Rand($this->G,200);  $B=Rand($this->B,200);  }else{  $R=Rand(50,200);  $G=Rand(50,200);  $B=Rand(50,200);  }  $color=ImageColorAllocate($this->IMAGE,$R,$G,$B);  //柱形高度  $height=($this->Y-$this->BORDER)-($this->Y-$this->BORDER*2)*($item_array[$i]/$item_max);  ImageFilledRectangle($this->IMAGE,$xx,$height,$xx+$this->BORDER,$this->Y-$this->BORDER,$color);  ImageString($this->IMAGE,$this->FONTSIZE,$xx,$height-$this->BORDER,$item_array[$i],$this->FONTCOLOR);  //用于间隔  $xx=$xx+$this->BORDER*2;  }  } 
//-----------横柱形图  function imageColumnH(){  $item_array=Split($this->ARRAYSPLIT,$this->ITEMARRAY);  $num=Count($item_array);  $item_max=0;  for ($i=0;$i<$num;$i++){ $item_max=Max($item_max,$item_array[$i]); } $yy=$this->Y-$this->BORDER*2;  //画柱形图  for ($i=0;$i<$num;$i++){ srand((double)microtime()*1000000); if($this->R!=255 && $this->G!=255 && $this->B!=255){  $R=Rand($this->R,200);  $G=Rand($this->G,200);  $B=Rand($this->B,200);  }else{  $R=Rand(50,200);  $G=Rand(50,200);  $B=Rand(50,200);  }  $color=ImageColorAllocate($this->IMAGE,$R,$G,$B);  //柱形长度  $leight=($this->X-$this->BORDER*2)*($item_array[$i]/$item_max);  ImageFilledRectangle($this->IMAGE,$this->BORDER,$yy-$this->BORDER,$leight,$yy,$color);  ImageString($this->IMAGE,$this->FONTSIZE,$leight+2,$yy-$this->BORDER,$item_array[$i],$this->FONTCOLOR);  //用于间隔  $yy=$yy-$this->BORDER*2;  }  } 
//--------------折线图  function imageLine(){  $item_array=Split($this->ARRAYSPLIT,$this->ITEMARRAY);  $num=Count($item_array);  $item_max=0;  for ($i=0;$i<$num;$i++){ $item_max=Max($item_max,$item_array[$i]); } //$xx=$this->BORDER;  //画柱形图  for ($i=0;$i<$num;$i++){ srand((double)microtime()*1000000); if($this->R!=255 && $this->G!=255 && $this->B!=255){  $R=Rand($this->R,200);  $G=Rand($this->G,200);  $B=Rand($this->B,200);  }else{  $R=Rand(50,200);  $G=Rand(50,200);  $B=Rand(50,200);  }  $color=ImageColorAllocate($this->IMAGE,$R,$G,$B);  //柱形高度  $height_now=($this->Y-$this->BORDER)-($this->Y-$this->BORDER*2)*($item_array[$i]/$item_max);  if($i!="0"){  ImageLine($this->IMAGE,$xx,$height_next,$xx+$this->BORDER,$height_now,$color);  }  ImageString($this->IMAGE,$this->FONTSIZE,$xx+$this->BORDER,$height_now-$this->BORDER/2,$item_array[$i],$this->FONTCOLOR);  $height_next=$height_now;  //用于间隔  $xx=$xx+$this->BORDER;  }  } 
//--------------完成打印图形<A href="http://knowsky.com">http://knowsky.com</A>  function printAll(){  ImageGIF($this->IMAGE);  ImageDestroy($this->IMAGE);  }  //--------------调试  function debug(){  echo "X:".$this->X."Y:".$this->Y;  echo "BORDER:".$this->BORDER;  $item_array=split($this->ARRAYSPLIT,$this->ITEMARRAY);  $num=Count($item_array);  echo "数值个数:".$num."数值:";  for ($i=0;$i<$num;$i++){ echo "".$item_array[$i];  }  }  } 
$report=new ImageReport;  $report->setImage(600,300,255,255,255,1);//参数(长,宽,背影色R,G,B,是否透明1或0)  $temparray="50,25,100,250,180,200,150,220,200,150,50,25,100,250,180,200,150,220,200,150";//数值,用指定符号隔开  $report->setItem(',',$temparray,3,20);//参数(分隔数值的指定符号,数值变量,样式1为竖柱图2为横柱图3为折线图,距离)  $report->setFont(1);//字体大小1-10  $report->PrintReport();  //$report->debug();//调式之用  ?>