jpgraph 生成类型数据以图表，走势图的形式表现出来

<?php教程

/**
 *  ecshop jpgraph图表类库
 *  ==============================================================
 *  利用开源的jpgraph库实现对各类型数据以图表，走势图的形式表现出来。
 *  ==============================================================
**/

class cls_jpgraph
{
 var $db = null;
 var $ydata = array();
 var $width = 350;
 var $height = 250;

 var $graph = ''; //图形对象
 var $piegraph = ''; //丙状图形

 var $lineplot = ''; //线性对象
 var $barpot = ''; //柱状对象
 var $gbplat = ''; //柱状组对象
 var $txt = '';  //文本对象
 var $p1 = '';  //丙状图对象

 var $scale = ''; //图表类型? (textlin,textlog,intlin)
 var $yscale = '';   // (log,)
 var $xgrid = false; //x轴网格显示
 var $ygrid = false; //y轴网格显示
 var $title = ''; //标题
 var $subtitle = ''; //子标题(一般为日期)
 var $xaxis = ''; //x轴名称
 var $yaxis = ''; //y轴名称

 /*margin position*/
 var $left = 0;
 var $right = 0;
 var $top = 0;
 var $bottom = 0;

 /**
 *构造函数
 */
 function cls_jpgraph($width=350,$height=250)
 {
  $this->width = $width;
  $this->height = $height;

  $this->graph = new graph($this->width,$this->height);

 }

 /**
 * 图表类库的构造函数
 *
 */
 /*
 function __construct($parms,$width,$height)
 {
  cls_jpgraph($parms,$width,$height);
 }
 */

 /*图片基本信息设置*/
 function set_jpgraph($scale='intlin',$title='',$subtitle='',$bgcolor='',$xaxis='',
               $yaxis='',$xgrid=false,$ygrid=false,$margin='') {

  $this->scale = $scale;
  $this->title = $title;
  $this->subtitle = $subtitle;
  $this->xaxis = $xaxis;
  $this->yaxis = $yaxis;
  $this->xgrid = $xgrid;
  $this->ygrid = $ygrid;

  if(!empty($scale)) {
   $this->graph->setscale($this->scale);
  }
  else {
  $this->graph->setscale('intlin');
  }
  $this->graph->xgrid->show($this->xgrid,$this->xgrid);
  $this->graph->ygrid->show($this->ygrid,$this->ygrid);

  if(!empty($bgcolor)) {
   $this->graph->setmargincolor($bgcolor);
  }

  /*如果手工设置了图片位置*/
  if(is_array($margin)) {
   while(list($key,$val) = each($margin)) {
    $this->$key = $val;
   }
   $this->graph->setmargin($this->left,$this->right,$this->top,$this->bottom);
  }

  if(!empty($this->title)) {
   $this->graph->title->set($this->title);
  }
  if(!empty($this->subtitle)) {
   $this->graph->subtitle->set($this->subtitle);
  }
  else {
   $this->graph->subtitle->set('('.date('y-m-d').')'); //默认子标题设置为当前日期
  }
  if(!empty($this->xaxis)) {
   $this->graph->xaxis->title->set($this->xaxis);
  }
  if(!empty($this->yaxis)) {
   $this->graph->yaxis->title->set($this->yaxis);
  }

 }

 /*创建线性关系图表(linear plot)*/
 function create_lineplot($parms,$color='black',$weight=1)
 {
  $this->ydata = $parms;
  $this->lineplot = new lineplot($this->ydata);
  $this->lineplot->setcolor($color);
  $this->lineplot->setweight($weight);

  return $this->lineplot;
 }

 /*创建柱状图表(bar pot)*/
 function create_barpot($parms,$color='black',$width='0')
 {
  $this->ydata = $parms;
  $this->barpot = new barplot($this->ydata);
  $this->barpot->setfillcolor($color);
  if(!empty($width)) {
   $this->barpot->setwidth($width);
  }

  return $this->barpot;
 }

 /*创建数据柱状图表组*/
 function create_bargroup($plotarr,$width='0.8')
 {
  $this->gbplot = new groupbarplot($plotarr);
  $this->gbplot->setwidth($width);

  return $this->gbplot;
 }

 /*创建文本内容*/
 function create_text($str,$postion='',$color='black')
 {
  $this->txt = new text($str);

  if(is_array($postion)) {
   while(list($key,$val) = each($postion)) {
    $this->$key = $val;
   }
   $this->txt->setpos($this->left,$this->top);
  }
  else {
   $this->txt->setpos(10,20);
  }
  $this->txt->setcolor($color);

  $this->graph->add($this->txt);
 }

 /*创建丙状图表*/
 function create_pie($parms,$title,$type='3d',$size='0.5',$center='0.5',$width='350',$height='250')
 {
  $this->width = $width;
  $this->height = $height;

  $this->piegraph = new piegraph(300,200);
  $this->piegraph->setshadow();

  $this->piegraph->title->set($title);

  if('3d' != $type) {
   $this->p1 = new pieplot($parms);
   $this->piegraph->add($this->p1);
  }
  else {
   $this->p1 = new pieplot3d($parms);
   $this->p1->setsize($size);
   $this->p1->setcenter($center);
//   $this->p1->setlegends($gdatelocale->getshortmonth());
   $this->piegraph->add($this->p1);
  }
  $this->piegraph->stroke();
 }

 function get_auth_code($length=4)
 {
  $spam = new antispam();
  $chars = $spam->rand($length);

  if( $spam->stroke() === false ) {
   return false;
  }

  return $chars;
 }

 /*完成图形创建并显示*/
 function display($obj)
 {
  $this->graph->add($obj);
  $this->graph->stroke();
 }
}

?>

　　imagefill([image], [start x point], [start y point], [color])

　　imagefill($newimg,0,0,$skyblue); 　

　imagepng($newimg);

　　imagedestroy($newimg); ?＞

＜? header ("content-type: image/png");

　　$newimg = imagecreate(250,250);

　　$skyblue = imagecolorallocate($newimg,136,193,255);

　　imagefill($newimg,0,0,$skyblue);

　　imagepng($newimg);

　　imagedestroy($newimg);

　　?＞ 　　

function uploadimage($upname,$smallmark=1,$dstsw,$dstsh=0,$path_dim,$path_xim,$newname,$smallname=0,$filetype="null") {
    global $webaddr,$_files,$my;
    $phpv=str_replace('.', '', php_version);
    $filename=$upname;
    $max_file_size = 2147483648;        //上传文件大小限制, 单位byte 2m
    $path_im = $path_dim;               //生成大图保存文件夹路径
    $path_sim = $path_xim;              //缩略图保存文件夹路径
    $simclearly=75;
    $simclearlypng =$phpv>=512?7:75;        //缩略图清晰度0-100，数字越大越清晰，文件尺寸越大
    $smallmark = $smallmark;            //是否生成缩略图(1为加生成,其他为不);
    $dst_sw =$dstsw;                   //定义缩略图宽度，高度我采用等比例缩放，所以只要比较宽度就可以了
    $uptypes=array(
        'image/jpg',
        'image/jpeg',
        'image/png',
        'image/pjpeg',
        'image/gif',
        'image/bmp',
        'image/x-png'
    );

    if (!is_uploaded_file($_files[$filename][tmp_name])) {
        dsetcookie('setok','upload1');
        header("location:111cn.net/profile");
        exit;
    }
    $file = $_files[$filename];
    $pinfo = pathinfo($file["name"]);
    if ($filetype=="null") {
        $filetype = $pinfo['extension'];
    }
    if (!in_array(strtolower($pinfo['extension']),array("jpg","jpeg","png","gif"))) {
        dsetcookie('setok','upload3');
        header("location:111cn.net/profile");
        exit;
    }

    if($max_file_size < $file["size"]) {//检查文件大小
        dsetcookie('setok','upload2');
        header("location:111cn.net/profile");
        exit;
    }
    if(!in_array($file["type"],$uptypes)) { //检查文件类型
        dsetcookie('setok','upload3');
        header("location:111cn.net/profile");
        exit;
    }
    if(!file_exists($path_im)) {
        mkdir($path_im);
    }

    $filename = $file["tmp_name"];
    $im_size = getimagesize($filename);

    $src_w = $im_size[0];
    $src_h = $im_size[1];
    $src_type = $im_size[2];

    $all_path = $path_im.$newname.".".$filetype;//路径+文件名,目前以上传时间命名
    if (file_exists($all_path)) {
        @unlink($all_path);
    }
    if(!move_uploaded_file ($filename,$all_path)) {
        dsetcookie('setok','upload4');
        header("location:111cn.net/profile");
        exit;
    }
    $pinfo = pathinfo($all_path);
    $fname = $pinfo[basename];

    switch($src_type) {//判断源图片文件类型
         case 1://gif
         $src_im = @imagecreatefromgif($all_path);//从源图片文件取得图像
         break;
         case 2://jpg
         $src_im = @imagecreatefromjpeg($all_path);
         break;
         case 3://png
         $src_im = @imagecreatefrompng($all_path);
         break;
         //case 6:
         //$src_im=imagecreatefromwbmp($all_path);
         //break;
         default:
         dsetcookie('setok','upload3');
         header("location:111cn.net/profile");
         exit;
    }

   if($smallmark == 1) {
       if(!file_exists($path_sim)) {//检查缩略图目录是否存在，不存在创建
           mkdir($path_sim);
       }
       if ($smallname) $newname=$smallname;
       $sall_path = $path_sim.$newname.".".$filetype;
       if (file_exists($sall_path)) {
           @unlink($sall_path);
       }
       if($src_w <= $dst_sw) { // 原图尺寸 <= 缩略图尺寸
           if ($dstsh==0)  {
                $dst_sim = @imagecreatetruecolor($src_w,$src_h); //新建缩略图真彩位图
                $sx=$sy=0;
           } else {
                $dst_sim = @imagecreatetruecolor($dstsw,$dstsh); //新建缩略图真彩位图
                $sx=($dstsw-$src_w)/2;
                $sy=($dstsh-$src_h)/2;
           }
           $img = @imagecreatefrompng("images/phbg.png");
           @imagecopymerge($dst_sim,$img,0,0,0,0,$dstsw,$dstsh,100); //原图图像写入新建真彩位图中
           @imagecopymerge($dst_sim,$src_im,$sx,$sy,0,0,$src_w,$src_h,100); //原图图像写入新建真彩位图中
       }

       if($src_w > $dst_sw) { // 原图尺寸 > 缩略图尺寸
           $dst_sh = $dst_sw/$src_w*$src_h;
           if ($dst_sh<$dstsh) {
               $dst_sh=$dstsh;
               $dst_sw=$dst_sh/$src_h*$src_w;
           }
           if ($dstsh==0) {
                $dst_sim = @imagecreatetruecolor($dst_sw,$dst_sh); //新建缩略图真彩位图（等比例缩小原图尺寸）
           } else {
                $dst_sim = @imagecreatetruecolor($dstsw,$dstsh); //新建缩略图真彩位图（等比例缩小原图尺寸）
           }
           @imagecopyresampled($dst_sim,$src_im,0,0,0,0,$dst_sw,$dst_sh,$src_w,$src_h); //原图图像写入新建真彩位图中
       }

       switch($src_type) {
            case 1:@imagegif($dst_sim,$sall_path,$simclearly);//生成gif文件，图片清晰度0-100
            break;
            case 2:@imagejpeg($dst_sim,$sall_path,$simclearly);//生成jpg文件，图片清晰度0-100
            break;
            case 3:@imagepng($dst_sim,$sall_path,$simclearlypng);//生成png文件，图片清晰度0-100
            break;
            //case 6:
            //imagewbmp($dst_sim,$sall_path);
            break;
       }
       //释放缓存
       @imagedestroy($dst_sim);
    }
    @imagedestroy($src_im);
    return $newname.".".$filetype;
}
?>