PHP实现网上点歌(二)

  midif2.php

  <?

  $d=dir("./dir");     //得到dir目录对象

  $i="0";

  while($entry=$d->read()){

  $i=$i+1;

  if($i>2){           //大于2的目的是去掉当前目录的".",和表示前一个目录的".."

  $wq[]=$entry;  //把目录明细放入$wq数组中

  }

  }

  $d->close();         //关闭

  ?>

  <html>

  <head>

  <title>List</title>

  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">

  <script LANGUAGE="javascript">

  <!--

  var onecount;

  onecount=0;

  subcat = new Array();

  <?

  $onecount="0";

  for($j=0;$j<count($wq);$j++){

  $dir="./dir/".$wq[$j];

  $d=dir($dir);                      //得到每一个dir目录下的每一个目录对象

  $i="0";

  while($entry=$d->read()){

  $i=$i+1;

  if($i>2){

  ?>

  subcat[<?echo $onecount;?>] = new Array("<?echo $entry;?>","<?echo $wq[$j];?>","<?echo $entry;?>");

  <?

  $onecount=$onecount+1;

  }

  }

  $d->close();

  }

  ?>

  onecount=<?echo $onecount;?>;

  function changelocation(locationid)

  {

  document.myform.song.length = 0;

  var locationid=locationid;

  var i;

  for (i=0;i < onecount; i++)

  {

  if (subcat[i][1] == locationid)

  {

  document.myform.song.options[document.myform.song.length] = new Option(subcat[i][0],subcat[i][2]);

  }

  }

  }

  //-->

  </script>

  </head>

  <body>

  <form method="post" action="midif1.php" name="myform" target="f1">

  <select name="zj" onChange="changelocation(document.myform.zj.options[document.myform.zj.selectedIndex].value)">

  <?for($i=0;$i<count($wq);$i++){?>

  <option value="<?echo $wq[$i];?>"><?echo $wq[$i];?></option>

  <?}?>

  </select>

  <select name="song">

  <option selected value=""></option>

  </select>

  <input type="submit" name="play" value="播放">

  <input type="button" name="stop" value="停止" onclick="javascript:parent.f1.location.href='midif1.php'">

  <br>

  <br>

  播放次数:

  <select name="looptime">

  <option value="1" selected>只听一遍</option>

  <option value="infinite">百听不厌</option>

  </select>

  <a href="javascript:history.go(0)">刷新曲目</a>

  </form>

  <script LANGUAGE="javascript">

  <!--

  changelocation(document.myform.zj.options[document.myform.zj.selectedIndex].value);

  //-->

  </script>

  </body>

  </html>

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