PHP表单不发布

Question

这个表格根本没有发布价值,我无法弄明白.我已经尝试使用PHP_SELF和单独的页面操作,但没有任何作用.所有其他形式都有效 - 因此它不是服务器问题.我究竟做错了什么？谢谢.

 <form name=\"projects\" action=\"upload.php\" method=\"POST\">

    <?php 
        echo "<tr>
            <td valign = \"top\" bgcolor=\"$row_color\"> $title </td> 
            <td valign = \"top\" bgcolor=\"$row_color\"> $description </td> 
            <td valign = \"top\" bgcolor=\"$row_color\"> $academicdiscipline </td>
            <td valign = \"top\" bgcolor=\"$row_color\"> "; 

                $allowed = $academicdiscipline; 
                switch ($allowed) {
                case "Civil and Environmental": 
                  echo "<select name=\"priority\" class=\"priority\">
                          <option>  </option>
                          <option value=\"1\"> 1 </option>
                          <option value=\"2\"> 2 </option>
                          <option value=\"3\"> 3 </option> 
                          <option value=\"4\"> 4 </option>
                          <option value=\"5\"> 5 </option>
                          <option value=\"6\"> 6 </option>
                          <option value=\"7\"> 7 </option>
                          <option value=\"8\"> 8 </option>
                          <option value=\"9\"> 9 </option>
                          <option value=\"10\"> 10 </option>
                        </select> ";
                  break;
                case "Electronics": 
                  echo "<select name=\"priority\" class=\"priority\">
                          <option>  </option>
                          <option value=\"1\"> 1 </option>
                          <option value=\"2\"> 2 </option>
                          <option value=\"3\"> 3 </option> 
                          <option value=\"4\"> 4 </option>
                          <option value=\"5\"> 5 </option>
                        </select>";
                  break;
                case "Environment and Management": 
                  echo "<select name=\"priority\" class=\"priority\">
                          <option>  </option>
                          <option value=\"1\"> 1 </option>
                          <option value=\"2\"> 2 </option>
                          <option value=\"3\"> 3 </option> 
                          <option value=\"4\"> 4 </option>
                          <option value=\"5\"> 5 </option>
                        </select>";
                  break;
                case "Mechanical and Materials": 
                  echo "<select name=\"priority\" class=\"priority\">
                          <option>  </option>
                          <option value=\"1\"> 1 </option>
                          <option value=\"2\"> 2 </option>
                          <option value=\"3\"> 3 </option> 
                          <option value=\"4\"> 4 </option>
                          <option value=\"5\"> 5 </option>
                          <option value=\"6\"> 6 </option>
                          <option value=\"7\"> 7 </option>
                          <option value=\"8\"> 8 </option>
                          <option value=\"9\"> 9 </option>
                          <option value=\"10\"> 10 </option>
                          <option value=\"11\"> 11 </option>
                          <option value=\"12\"> 12 </option>
                          <option value=\"13\"> 13 </option> 
                          <option value=\"14\"> 14 </option>
                          <option value=\"15\"> 15 </option>
                        </select> ";
                  break;
                default: 
                    echo "<select name=\"priority\" class=\"priority\">
                          <option>  </option>
                          <option value=\"1\"> 1 </option>
                          <option value=\"2\"> 2 </option>
                          <option value=\"3\"> 3 </option> 
                          <option value=\"4\"> 4 </option>
                          <option value=\"5\"> 5 </option>
                        </select> ";
                  break;
                default: 
                    echo "<select name=\"priority\" class=\"priority\">
                              <option>  </option>
                              <option> 1 </option>
                              <option> 2 </option>
                              <option> 3 </option> 
                              <option> 4 </option>
                              <option> 5 </option>
                            </select>"; } 


            echo "</td></tr>
         <tr bgcolor=\"#ffffff\"> </tr>
         <tr bgcolor=\"#902C2E\"> </tr>"; 

      $row_count++; }  

 echo"<tr>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
</tr>
<tr>
  <td>&nbsp;</td>
  <td ><input name=\"reset\" type=\"reset\" value=\"Reset\"/> 
       <input name=\"submit\" type=\"submit\" value=\"Select\"/> 
</tr></table>" ;  ?>
</form> 

upload.php页面可以上传除了优先级之外的所有其他条目,我无法通过上面的代码进行POST.这是upload.php文件:

if(isset($_POST[submit]) && !empty($_POST[submit])) { 

$fullname = ''.$data[0]["sn"][0].', '.$data[0]["givenname"][0].'';  
$givenname = ''.$data[0]["givenname"][0].''; 
$priority = '$_POST[priority]'; 

$sql = "SELECT * FROM flux_student_records WHERE studentname = '$fullname' ";
$retval = mysql_query($sql) or die(mysql_error());  

 if (!$retval) { 
        die('Could not retrieve data: There are no project proposals yet. <br /><br /> ' . mysql_error());   }

    while ($row = mysql_fetch_array($retval)) { 
        extract($row);  }

    $sql = "INSERT INTO flux_project_selection( id, studentname, title, academicdiscipline, priority)
            SELECT flux_student_records.id, flux_student_records.studentname, project_proposals.title, project_proposals.academicdiscipline, '$priority'
            FROM project_proposals
            JOIN flux_student_records ON project_proposals.academicdiscipline = flux_student_records.academicdiscipline
            WHERE flux_student_records.studentname = '$studentname'
            AND 'priority' IS NOT NULL
            LIMIT 5"; 

    $retval = mysql_query($sql) or die('Error: MySQL query failed. Project has not been added to the database. '); 

echo "<p> Your project selection have been added to the system. <br> You'll be redirected to list of projects in the system. </p><br />";   
//echo "<meta http-equiv=Refresh content=2;url=index.php>";


} 

Answer 1

就我在你的问题中发布的代码所说,你不是在PHP中

<form name=\"projects\" action=\"upload.php\" method=\"POST\">

所以\从所有这些中删除斜杠.

那么这些:

if(isset($_POST[submit]) && !empty($_POST[submit])) { 

$priority = '$_POST[priority]'; 

你需要添加和删除引号:

if(isset($_POST['submit']) && !empty($_POST['submit'])) { 

$priority = $_POST['priority']; 

此外,你<option>的所有人都没有设定值,所以你可能想要做些什么.

即: <option value=\"1\"> 1 </option>

等等

另外,使用mysql_功能删除.它们已被弃用,将从未来的PHP版本中删除.

使用mysqli预处理语句,或与准备语句PDO.它们更安全.

我试过使用PHP_SELF ...

你可以action=""在PHP里面使用if,它和self一样.或者,action=\"\"如果在PHP内部,或者action=''取决于你如何回应它.

将错误报告添加到文件的顶部,这将有助于查找错误.

<?php 
error_reporting(E_ALL);
ini_set('display_errors', 1);

// rest of your code

旁注:错误报告应该只在暂存中完成,而不是生产.

编辑:

我在你的查询中注意到的另一件事:

$sql = "INSERT INTO flux_project_selection( id, studentname, title, academicdiscipline, priority)
        SELECT flux_student_records.id, flux_student_records.studentname, project_proposals.title, project_proposals.academicdiscipline, '$priority'
        FROM project_proposals
        JOIN flux_student_records ON project_proposals.academicdiscipline = flux_student_records.academicdiscipline
        WHERE flux_student_records.studentname = '$studentname'
        AND 'priority' IS NOT NULL
        LIMIT 5"; 

尝试从取出的报价'$priority'和AND 'priority'因为这看起来是一个列.

如果$priority包含MySQL可能会抱怨的任何字符,则将其包含在ticks而不是引号中并使用转义转义变量mysql_real_escape_string().

即:

project_proposals.academicdiscipline, `$priority`
            FROM project_proposals

...

AND `priority` IS NOT NULL

这对你也没有帮助

$retval = mysql_query($sql) or die('Error: MySQL query failed. Project has not been added to the database. '); 

用or die(mysql_error());而不是or die('Error: MySQL query failed. Project has not been added to the database. ');