PHP+Mysql+jQuery中国地图区域数据统计实例讲解

<script type="text/javascript" src="http://9i0i.com/pic.php?p=jquery.js"></script> 
<script type="text/javascript" src="http://9i0i.com/pic.php?p=raphael.js"></script> 
<script type="text/javascript" src="http://9i0i.com/pic.php?p=chinamapPath.js"></script>

<div id="map"></div>

$host="localhost";//主机 
$db_user="root";//数据库用户名 
$db_pass="";//密码 
$db_name="demo";//数据库名称 
 
$link=mysql_connect($host,$db_user,$db_pass);//连接数据库 
mysql_select_db($db_name,$link); 
mysql_query("SET names UTF8"); 
 
$sql = "select active from mapdata order by id asc";//查询 
$query = mysql_query($sql); 
 
while($row=mysql_fetch_array($query)){ 
  $arr[] = $row['active']; 
} 
echo json_encode($arr);//JSON格式 
mysql_close($link);//关闭连接

$(function(){ 
  $.get("json.php",function(json){ 
    ... 
  }); 
});

$(function(){ 
 $.get("json.php",function(json){//获取数据 
 var data = string2Array(json);//转换数组 
  
 var flag; 
 var arr = new Array();//定义新数组，对应等级 
 for(var i=0;i<data.length;i++){ 
  var d = data[i]; 
  if(d<100){ 
   flag = 0; 
  }else if(d>=100 && d<500){ 
   flag = 1; 
  }else if(d>=500 && d<2000){ 
   flag = 2; 
  }else if(d>=2000 && d<5000){ 
   flag = 3; 
  }else if(d>=5000 && d<10000){ 
   flag = 4; 
  }else{ 
   flag = 5; 
  } 
  arr.push(flag); 
 } 
 //定义颜色 
 var colors = ["#d7eef8","#97d6f5","#3fbeef","#00a2e9","#0084be","#005c86"]; 
  
 //调用绘制地图方法 
 var R = Raphael("map", 600, 500); 
 paintMap(R); 
  
 var textAttr = { 
  "fill": "#000", 
  "font-size": "12px", 
  "cursor": "pointer" 
 }; 
    
 var i=0; 
 for (var state in china) { 
  china[state]['path'].color = Raphael.getColor(0.9); 
  (function (st, state) { 
    
   //获取当前图形的中心坐标 
   var xx = st.getBBox().x + (st.getBBox().width / 2); 
   var yy = st.getBBox().y + (st.getBBox().height / 2); 
    
   //修改部分地图文字偏移坐标 
   switch (china[state]['name']) { 
    case "江苏": 
     xx += 5; 
     yy -= 10; 
     break; 
    case "河北": 
     xx -= 10; 
     yy += 20; 
     break; 
    case "天津": 
     xx += 10; 
     yy += 10; 
     break; 
    case "上海": 
     xx += 10; 
     break; 
    case "广东": 
     yy -= 10; 
     break; 
    case "澳门": 
     yy += 10; 
     break; 
    case "香港": 
     xx += 20; 
     yy += 5; 
     break; 
    case "甘肃": 
     xx -= 40; 
     yy -= 30; 
     break; 
    case "陕西": 
     xx += 5; 
     yy += 10; 
     break; 
    case "内蒙古": 
     xx -= 15; 
     yy += 65; 
     break; 
    default: 
   } 
   //写入文字 
   china[state]['text'] = R.text(xx, yy, china[state]['name']).attr(textAttr); 
    
   var fillcolor = colors[arr[i]];//获取对应的颜色 
    
   st.attr({fill:fillcolor});//填充背景色 
    
   st[0].onmouseover = function () { 
    st.animate({fill: "#fdd", stroke: "#eee"}, 500); 
    china[state]['text'].toFront(); 
    R.safari(); 
   }; 
   st[0].onmouseout = function () { 
    st.animate({fill: fillcolor, stroke: "#eee"}, 500); 
    china[state]['text'].toFront(); 
    R.safari(); 
   }; 
      
   })(china[state]['path'], state); 
   i++; 
 } 
 }); 
});

function string2Array(string) { 
  eval("var result = " + decodeURI(string)); 
  return result; 
}