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    1. 明輝手游網中心:是一個免費提供流行視頻軟件教程、在線學習分享的學習平臺!

      用Flash圖形化數據(二)

      [摘要]讓我們烤點甜餅(做餅圖) 成功地安裝了PHP地Shockwave Flash支持后,就可以用PHP創建Shockwave文件了。學習的最好方法就是直接跳到程序去,所以下面就讓我們看看程序。第一個文件包括怎樣使用類的示例代碼,同時也顯示了如何將一個Flash文件嵌入到HTML文檔中。 <?...
      讓我們烤點甜餅(做餅圖)
      成功地安裝了PHP地Shockwave Flash支持后,就可以用PHP創建Shockwave文件了。學習的最好方法就是直接跳到程序去,所以下面就讓我們看看程序。第一個文件包括怎樣使用類的示例代碼,同時也顯示了如何將一個Flash文件嵌入到HTML文檔中。

      <?php

      // include class needed for flash graph
      include("class.pie.flash.php");

      mysql_connect ("localhost", "root", "");

      $query = "SELECT DISTINCT city_name, COUNT(city_id)
          FROM city
          GROUP BY city_name;";

      $result = mysql_db_query ("hermes",$query);

      while ($row = mysql_fetch_array ($result)) {
          $city_counts[] = $row["COUNT(city_id)"];
          $city_names[] = $row["city_name"];
      }

      mysql_free_result ($result);

      // Instantiate new object
      $graph = new flash_pie($city_counts, http://www.okasp.com/techinfo/"city.swf");

      // set graph title (should not exceed about 25 characters)
      $graph->pie_title("City Results", 30);

      // set graph legend
      $graph->pie_legend($city_names);

      // show graph
      $graph->show();

      // free resources
      $graph->close();

      ?>  

      <html>
      <head>
      <meta http=equiv="Expires" content="Fri, Jun 12 1981 08:20:00 GMT">
      <meta http=equiv="Pragma" content="no-cache">
      <meta http=equiv="Cache-Control" content="no-cache">
      <meta http=equiv="Content-Type" content="text/html; charset=iso-8859-1">
      </head>
      <body bgcolor=white>
      <div align=center>
      <embed src=http://www.okasp.com/techinfo/"city.swf" quality=high loop=false pluginspage="http://www.macromedia.com/
      shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"
      type="application/x-shockwave-flash" width=600 height=300></embed>
      </div>
      </body>
      </html>  



      <?php

      class flash_pie {

      // class variables

      // setup some global colors
      var $r_arr = array(0.1,  1, 0, 1, 0, 1, 0.388235294, 0.4, 0.388235294, 0.929411765);
      var $g_arr = array(1,    0, 0, 1, 1, 0, 0.8,         0.4, 0.8,         0.439215686);
      var $b_arr = array(0.25, 0, 1, 0, 1, 1, 1,           0.4, 1,           0.043137255);  

      var $percents;

      function flash_pie($values, $this_file) { //begin constructor
          // to write out code directly to browser, set content header and use "php://stdout"
          //swf_openfile ("php://stdout", 700, 250, 30, 1, 1, 1);
          //header("Content-type: application/x-shockwave-flash");

          swf_openfile ($this_file, 1000, 450, 30, 1, 1, 1);
           
          // set up viewport for flash movie
          swf_ortho2 (-400, 300 , -90, 250);  

          // choose the font we will use for pie graph
          swf_definefont(10, "Mod");

          // get sum of array for percents/slices
          while(list($key,$val) = each($values)) {  
              $sum = $sum + $val;  
          }

          for ($i=0; $i<count($values); $i++) {
              // calculate how big they need to be and then
              // draw all of our slices
              if ($i == 0) {  
                  // setup parameters for first slice
                  $begin = 0;
                  $val = $values[$i]/$sum;
                  $end = $val*360;
                  swf_translate(-200, 0, 0);
              } else {
                  // setup parameters for every other slice
                  $begin = $end;
                  $val = $values[$i]/$sum;
                  $end = $end + $val*360;
              }

              // function call to add slice
              $objID = 1+$i*10;
              $this->show_slice($i, $objID, $begin, $end);

              // put together percent array for all labels
              $this->percents[$i] = round($values[$i]/$sum*100);            
          }
           
      }  //end flash_pie

      function show_slice($i, $objID, $begin, $end) {
          // draws a slice and places it in our frame
          swf_addcolor($this->r_arr[$i], $this->g_arr[$i], $this->b_arr[$i], 1);

          swf_startshape($objID);
          swf_shapefillsolid(0, 0, 0, 1);
          swf_shapearc(0, 0, 100, $begin, $end);
          swf_shapecurveto(0, 0, 0, 0);
          swf_endshape($objID);

          swf_pushmatrix();
          swf_placeobject($objID, 1);
          swf_popmatrix();
          swf_showframe();
      }


      function pie_legend($labels) {
          // draws the legend and labels and places it in our frame
          for ($i=0; $i<count($labels); $i++) {
              swf_addcolor($this->r_arr[$i], $this->g_arr[$i], $this->b_arr[$i], 1);

              swf_definerect($i+1000, 1, 0, 20, 20, 0);
              if ($i == 0) {
                  swf_translate(120, 75, 0);
              } else {
                  swf_translate(0, 20, 0);
              }
              swf_placeobject($i+1000, 1);

              swf_translate(0, 5, 0);
              unset($label);
              $label = $labels[$i];
              $label .= " (";
              $label .= $this->percents[$i];
              $label .= " percent)";
              if ($i==0) {
                  $width = (swf_textwidth($label)/4)+30;
              } else {
                  $width = round(swf_textwidth($label)/2)+30;
              }
              $this->pie_text($i-1000, "$label", 15, $width, 0);
              swf_translate(-$width, 0, 0);
          }
          swf_translate($width, 30*count($labels), 0);
      }                


      function pie_text($id, $text, $size, $x, $y) {
          // simple function to draw text ($text) at ($x,$y) with font size ($size)
          // set color of text to black
          swf_addcolor(0,0,0,0);

          // set font size and slant
          swf_fontsize($size);
          swf_fontslant(0);

          // define, position and place text in frame
          swf_definetext($id, "$text", 1);
          swf_translate($x, $y, 0);
          swf_placeobject($id, 1);
      }

      function pie_title($text, $size) {
          // simple function to draw title and set lineup
          // $text should not exceed about 25 characters
          $this->pie_text(99, $text, $size, 0, 150);
          swf_translate(0, -300, 0);
      }        

      function show() {
          // show the frame
          swf_showframe();
      }


      function close() {
          // flush our buffer and return movie
          $data = swf_closefile(1);
      }                

      } // end class flash_pie

      ?>  

          注意,你可以將生成的SWF文件直接返回到瀏覽器中,而不必一定要像我一樣把它寫到一個文件中。這可能對測試來說是有用的,但你可能很少用到一個Flash文件,更多的時候你可能想把Flash文件嵌入到HTML文檔中。如果你選擇直接把Flash文件輸出到瀏覽器中,你可以如下設置header content 類型:
         header("Content-type: application/x-shockwave-flash")
      并把swf_openfile(filename",...)改成swf_openfile("php://stdout",...)

      更多信息的鏈接:
          http://www.php.net/manual/ref.swf.php  關于swf_* PHP函數的說明
          http://reality.sgi.com/grafica/flash/  下載PHP的swf庫
          http://openswf.org                     更多Flash工具和信息
          http://www.macromedia.com/software/flash/open/licensing/  
                                                 關于Macromedia Flash SDK的更多信息 


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