高手帮忙！php页面display_errors = On开启后仍然空白问题

下一跳转页面，main.php：
<? session_start();?>
<?php include("config.php"); ?>
<?php include("func.php"); ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>多媒体文件管理中心</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link href="style.css" rel="stylesheet" type="text/css">
</head><body>
<?
if ($_SESSION["usertype"]>=1&&$_SESSION["usertype"]<=5)
{
//echo $_SESSION["usertype"];
?>
<table width="778" border="0" cellspacing="0" cellpadding="0">
  <tr> 
    <td>
      <table width="100%" cellpadding="1" cellspacing="1" bgcolor="#6699FF">
        <tr> 
          <td height="25" bgcolor="#FFFFFF"><div align="center" class="pt12"><font color="#006699">多媒体文件管理中心 
              V1.0版</font></div></td>
        </tr>
      </table></td>
  </tr>
  <tr height="12"> 
    <td></td>
  </tr>
  <tr> 
    <td>
      <table width="100%" cellpadding="1" cellspacing="1" bgcolor="#6699FF">
        <tr> 
          <td width="180" valign="top" bgcolor="#FFFFFF"><table width="95%" border="0" align="center" cellpadding="1" cellspacing="1">
              <tr> 
                <td class="pt9">支持的多媒体文件类型</td>
              </tr>
              <tr> 
                <td height="30"><table width="75%" cellpadding="1" cellspacing="1" bgcolor="#6699FF">
                    <tr bgcolor="#FFFFFF"> 
                      <td width="22%" class="pt9"><div align="center"><img src="images/RM.gif" width="18" height="18"></div></td>
                      <td width="78%" class="pt9">RealPlay格式</td>
                    </tr>
                    <tr bgcolor="#FFFFFF"> 
                      <td class="pt9"><div align="center"><img src="images/avi.gif" width="18" height="18"></div></td>
                      <td class="pt9">AVI格式</td>
                    </tr>
                    <tr bgcolor="#FFFFFF"> 
                      <td class="pt9"><div align="center"><img src="images/WMV.gif" width="18" height="18"></div></td>
                      <td class="pt9">WMV格式</td>
                    </tr>
                  </table></td>
              </tr>
              <tr> 
                <td> <hr size="1"></td>
              </tr>
              <tr> 
                <td>
<table width="75%" cellpadding="1" cellspacing="1" bgcolor="#6699FF">
                    <tr bgcolor="#FFFFFF"> 
                      <td class="pt9"><div align="center"><a href="changepwd.php?name=<?=$_SESSION["username"]?>">更改密码</a></div></td>
                    </tr>
<?
if($_SESSION["usertype"]==1)
{
?>
                    <tr bgcolor="#FFFFFF"> 
                      <td class="pt9"><div align="center">管理用户</div></td>
                    </tr>
  <?
  }
  ?>
                  </table> 
  </td>
              </tr>
            </table></td>
          <td valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" cellpadding="1" cellspacing="1" bgcolor="#CCCCCC">
              <tr bgcolor="#D7D7D7" class="pt9"> 
                <td width="30" height="23"><div align="center"><font color="#0033CC">ID</font></div></td>
                <td height="23"><div align="center"><font color="#0033CC">标 题</font></div></td>
                <td width="30" height="23"><div align="center"><font color="#0033CC">格式</font></div></td>
                <td width="30" height="23"><div align="center"><font color="#0033CC">修改</font></div></td>
                <td width="30" height="23"><div align="center"><font color="#0033CC">删除</font></div></td>
              </tr>

解决方案 »

  1.   

    <?
    $conn=getconn();
    $sqlstr="select * from tbmedia order by id desc";
    //echo $sqlstr;
    $result=getresult($conn,$sqlstr);
    while($row = mysql_fetch_array($result)) 
    {
    ?>
                  <tr class="pt9"> 
                    <td width="30" height="20" bgcolor="#FFFFFF"><div align="center"><?=$row["id"]?></div></td>
                    <td height="20" bgcolor="#FFFFFF">　
                      <a href="viewmedia.php?id=<?=$row["id"]?>"><?=$row["title"]?>
                      </a> </td>
                    <td width="30" height="20" bgcolor="#FFFFFF"><div align="center"><img src="images/<?=$row["filetype"]?>.gif" alt="<?=$row["filetype"]?>" width="18" height="18">
                      </div></td>
                    <td width="30" height="20" bgcolor="#FFFFFF"><div align="center"><a href="change.php?id=<?=$row["id"]?>"><img src="images/change.gif" width="18" height="18" border="0"></a></div></td>
                    <td width="30" height="20" bgcolor="#FFFFFF"><div align="center"><a href="filedelete.php?id=<?=$row["id"]?>"><img src="images/delete.gif" width="18" height="18" border="0"></a></div></td>
                  </tr>
    <?
    }
    closeconn($conn);
    ?>
                </table>
                <table width="99%" border="0">
                  <tr>
                    <td> <form action="addfile.php" method="post" name="form" id="form">
                        <table width="100%" border="0">
                          <tr> 
                            <td><table width="75%" border="0">
                                <tr> 
                                  <td colspan="2"><div align="center" class="pt9">添加多媒体文件</div></td>
                                </tr>
                                <tr> 
                                  <td width="15%" class="pt9">标题：</td>
                                  <td width="85%"><input name="filetitle" type="text" class="pt9" id="filetitle2" size="40"></td>
                                </tr>
                                <tr> 
                                  <td class="pt9">URL：</td>
                                  <td><input name="url" type="text" id="url" value="<?=$defaulturl?>" size="50"></td>
                                </tr>
                                <tr> 
                                  <td class="pt9">格式：</td>
                                  <td><select name="filetype" size="1" id="filetype">
                                      <option value="WMV" selected>WMV</option>
                                      <option value="AVI">AVI</option>
                                      <option value="RM">RM</option>
                                    </select></td>
                                </tr>
                                <tr>
                                  <td class="pt9">类别：
                                    </td>
                                  <td>
    <?
    $conn=getconn();
    $sqlstr="select * from tbclass order by id";
    //echo $sqlstr;
    $result=getresult($conn,$sqlstr);
    ?>
      <select name="classid" size="1" id="classid">
    <?
    while($row = mysql_fetch_array($result)) 
    {
    ?>
                                      <option value="<?=$row["id"]?>" <? if($row["id"]==1) echo "selected"?>><?=$row["typename"]?></option>
    <?
    }
    closeconn($conn);
    ?>
                                    </select>
    </td>
                                </tr>
                                <tr> 
                                  <td>&nbsp;</td>
                                  <td><input name="Submit3" type="submit" class="pt9" value="添 加"> 
                                    <input name="Submit4" type="reset" class="pt9" value="取 消"></td>
                                </tr>
                              </table>
                              
                            </td>
                          </tr>
                          <tr>
                            <td class="pt9"><p><font color="#0066CC">上传说明：<br>
                                <br>
                                标题要在首页上显示，最好简单明了。 <br>
                                URL为标准链接格式，例如：<br>
                                微软格式 mms://www2.cadi.net/media/abc.wmv<br>
                                REAL格式 </font></p>
                              </td>
                          </tr>
                        </table>
                      </form>
    </td>
                  </tr>
                </table></td>
            </tr>
          </table></td>
      </tr>
      <tr height="12">
        <td></td>
      </tr>
      <tr> 
        <td><table width="100%" cellpadding="1" cellspacing="1" bgcolor="#6699FF">
            <tr> 
              <td height="25" bgcolor="#FFFFFF"><div align="center" class="pt9"> 
                  <p><font color="#006699">Acard 2002-08-29 v 1.0</font></p>
                </div></td>
            </tr>
          </table></td>
      </tr>
      <tr> 
        <td>&nbsp;</td>
      </tr>
    </table>
    <p class="pt9">&nbsp;</p>
    <?
    }
    ?>
    </body>
    </html>
      

  2.   

    看看session的目录设置了没有，默认是/tmp
    检查一下这个目录是否存在。
      

  3.   

    是session的问题，也是最头疼的问题正常情况下，session不会有什么问题，如果有了问题，巨麻烦，多想办法，慢慢解决吧，别人的配置不一定适合你的环境