更新PHP中的“发布”，但在检查数据库时，数据库显示为NULL

时间：2012-01-03 03:13:42

标签： php sql sql-update

我正在研究这段代码，而且我现在正处于智慧状态。由于某种原因，我无法更新我的数据库。

下面的代码更新，代码不再有效，更新命令似乎会停止PHP并导致错误。如果有人能解决这个问题，我将不胜感激。

    <?php
require_once('connectvars.php');
echo '<div id="postwrap">'
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>PDI NCMR - Edit</title>
  <link rel="stylesheet" type="text/css" href="CSS/postie.css" />
</head>
<body>
   <div id="logo">
    <img src="../images/PDI_Logo_2.1.gif" alt="PDI Logo" />
</div>

<?php
  if (isset($_POST['submit'])) {
// Connect to the database
    $dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);

// Enter data into the database
    $id = mysqli_real_escape_string($dbc, trim($_POST['id']));
    $ab = mysqli_real_escape_string($dbc, trim($_POST['ab']));
    $date = mysqli_real_escape_string($dbc, trim(date('Y-m-d',strtotime ($_POST['date']))));
    $part = mysqli_real_escape_string($dbc, trim($_POST['part']));
    $rev = mysqli_real_escape_string($dbc, trim($_POST['rev']));
    $partdesc = mysqli_real_escape_string($dbc, trim($_POST['partdesc']));
    $ncmrqty = mysqli_real_escape_string($dbc, trim($_POST['ncmrqty']));
    $comp = mysqli_real_escape_string($dbc, trim($_POST['comp']));
    $ncmrid = mysqli_real_escape_string($dbc, trim($_POST['ncmrid']));
    $rma = mysqli_real_escape_string($dbc, trim($_POST['rma']));
    $jno = mysqli_real_escape_string($dbc, trim($_POST['jno']));
    $fdt = mysqli_real_escape_string($dbc, trim($_POST['fdt']));
    $cof = mysqli_real_escape_string($dbc, trim($_POST['cof']));
    $fab1= mysqli_real_escape_string($dbc, trim($_POST['fab1']));
    $fab2= mysqli_real_escape_string($dbc, trim($_POST['fab2']));
    $fab3= mysqli_real_escape_string($dbc, trim($_POST['fab3']));
    $non= mysqli_real_escape_string($dbc, trim($_POST['non']));
    $dis= mysqli_real_escape_string($dbc, trim($_POST['dis']));
    $comm= mysqli_real_escape_string($dbc, trim($_POST['comm']));
    $caad= mysqli_real_escape_string($dbc, trim($_POST['caad']));
    $po= mysqli_real_escape_string($dbc, trim($_POST['po']));
    $pod = mysqli_real_escape_string($dbc, trim(date('Y-m-d',strtotime($_POST['pod']))));
    $dri = mysqli_real_escape_string($dbc, trim(date('Y-m-d',strtotime($_POST['dri']))));

    $query = "UPDATE ncmr SET ab = '$ab', date = '$date', part = '$part', rev = '$rev' , partdesc = '$partdesc' , ncmrqty = '$ncmrqty' , comp = '$comp' , ncmrid = '$ncmrid' , rma = '$rma' , jno = '$jno' , fdt = '$fdt' , cof = '$cof' , fab1 = '$fab1' , fab2 = '$fab2' , fab3 = '$fab3' , non = '$non' , dis = '$dis' , comm = '$comm' , caad = '$caad' , po = '$po' , pod = '$pod' , dri = '$dri'  WHERE id = "$_GET['id']"";

// echo your raw query and look for obvious errors
     echo "Query is : " . $query . "<br />";

// and at least use a basic mechanism to trap possibles errors
       mysqli_query($dbc, $query)  or die('Query Error : ' . mysqli_error($dbc));


// Confirm success with the user
        echo '<p>If you wish to edit more NCMRs, please <a href="list.php">go to the admin page!</a></p>';

        // echo your raw query and look for obvious errors
     echo "Query is : " . $query . "<br />";
// Clear the form data
    $id = "";
    $ab = "";
    $date = "";
    $part = "";
    $rev = "";
    $partdesc = "";
    $ncmrqty = "";
    $comp = "";
    $ncmrid = "";
    $rma = "";
    $jno = "";
    $fdt = "";
    $cof = "";
    $fab1= "";
    $fab2= "";
    $fab3= "";
    $non= "";
    $dis= "";
    $comm= "";
    $caad= "";
    $po= "";
    $pod = "";
    $dri = "";
            mysqli_close($dbc);
            }

  else {    

// Connect to the database
  $dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
// Grab the profile data from the database
if (!isset($_GET['id'])) {
    $query = "SELECT * FROM ncmr WHERE id = '$id'";
  }
  else {
    $query = "SELECT * FROM ncmr WHERE id = '" . $_GET['id'] . "'";
  }

  $data = mysqli_query($dbc, $query);

  if (mysqli_num_rows($data) == 1) { 
// The user row was found so display the user data
    $row = mysqli_fetch_array($data);
    echo '<form action="edit.php?id=<?php echo $id;?>" method="POST">'
    echo '<fieldset>';

        echo '<div id="box1">';
            if (empty($row['ab'])) $row['ab'] = "Empty";
            if (empty($row['date'])) $row['date'] = "Empty";
            if (empty($row['part'])) $row['part'] = "Empty";
            if (empty($row['rev'])) $row['rev'] = "Empty";
            if (empty($row['partdesc'])) $row['partdesc'] = "Empty";
            if (empty($row['ncmrqty'])) $row['ncmrqty'] = "Empty";
            echo '<div id="ab"><span class="b">Added By:&nbsp;&nbsp;</span><input type="text" name="ab" value="' . $row['ab'] . '" /></div>';
            echo '<div id="date"><span class="b">Date Filed:&nbsp;&nbsp;</span><input type="text" name="date" value="' . $row['date'] . '" /></div>';
            echo '<div id="part"><span class="b">Part Number:&nbsp;&nbsp;</span><input type="text" name="part" value="' . $row['part'] . '" /></div>';
            echo '<div id="rev"><span class="b">Part Revision:&nbsp;&nbsp;</span><input type="text" name="rev" value="' . $row['rev'] . '" /></div>';
            echo '<div id="partdesc"><span class="b">Part Description:&nbsp;&nbsp;</span><textarea rows="4" cols="22">' . $row['partdesc'] . '</textarea></div>';
            echo '<div id="ncmrqty"><span class="b">NCMR Qty:&nbsp;&nbsp;</span><input type="text" name="ncmrqty" value="' . $row['ncmrqty'] . '" /></div>';
        echo '</div>';

//Company, Customer NCMR, Internal RMA, and Job Number
        echo '<div id="box2">';
            if (empty($row['comp'])) $row['comp'] = "Empty";
            if (empty($row['ncmrid'])) $row['ncmrid'] = "Empty";
            if (empty($row['rma'])) $row['rma'] = "Empty";
            if (empty($row['jno'])) $row['jno'] = "Empty";
                echo '<div id="comp"><span class="b">Company:&nbsp;&nbsp;</span><input type="text" name="comp" value="' . $row['comp'] . '" /></div>';
                    echo '<div id="ncmrid"><span class="b">Customer NCMR ID:&nbsp;&nbsp;</span><input type="text" name="ncmrid" value="' . $row['ncmrid'] . '" /></div>';
                    echo '<div id="rma"><span class="b">Internal RMA #:&nbsp;&nbsp;</span><input type="text" name="rma" value="' . $row['rma'] . '" /></div>';
                    echo '<div id="jno"><span class="b">Job #:&nbsp;&nbsp;</span><input type="text" name="jno" value="' . $row['jno'] . '" /></div>';
        echo '</div>';

//Type of Failure and Class of Failure
        echo '<div id="box3">';
            echo '<h2>Failure</h2>';
                echo '<div id="cof"><span class="b">Class of Failure:&nbsp;&nbsp;</span><input type="text" name="cof"  size="15" value="' . $row['cof'] . '" /></div>';
                echo '<div id="fdt"><span class="b">Failure Due To:&nbsp;&nbsp;</span><input type="text" name="fdt"  size="15" value="' . $row['fdt'] . '" /></div>';

            echo '</div>';

//Fabricators
        echo '<div id="box4">';
            echo '<h2>Fabricators</h2>';
if ($row['fab1']="--None--")
{
    echo'<div id="fab1">';
    $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); 
    $mysqli->select_db('user');
    $result = $mysqli->query("SELECT * FROM user"); 
    echo "<SELECT name='fab1'>\n";
    while($row = $result->fetch_assoc())
    {
        echo "<option value='{$row['user']}'>{$row['user']}</option>\n";
    }
    echo "</select>\n";
    echo '</div>';
}
else
{
    echo'<div id="fab1">';
    $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); 
    $mysqli->select_db('user');
    $result = $mysqli->query("SELECT * FROM user"); 
    echo "<SELECT name='fab1'>\n";
    while($row = $result->fetch_assoc())
    {
        echo "<option value='{$row['user']}'>{$row['user']}</option>\n";
    }
    echo "</select>\n";
    echo '</div>';
}


if ($row['fab2']="--None--")
{
    echo'<div id="fab2">';
    $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); 
    $mysqli->select_db('user');
    $result = $mysqli->query("SELECT * FROM user"); 
    echo "<SELECT name='fab2'>\n";
    while($row = $result->fetch_assoc())
    {
        echo "<option value='{$row['user']}'>{$row['user']}</option>\n";
    }
    echo "</select>\n";
    echo '</div>';
}
else
{
    echo '<div id="fab2"><span class="b"></span><input type="text" name="fab1"  size="20" value="' . $row['fab1'] . '" /></div>';
    echo '</div>';
}
if ($row['fab3']="--None--")
{
    echo'<div id="fab3">';
    $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); 
    $mysqli->select_db('user');
    $result = $mysqli->query("SELECT * FROM user"); 
    echo "<SELECT name='fab3'>\n";
    while($row = $result->fetch_assoc())
    {
        echo "<option value='{$row['user']}'>{$row['user']}</option>\n";
    }
    echo "</select>\n";
    echo '</div>';
}
else
{
    echo '<div id="fab3"><span class="b"></span><input type="text" name="fab1"  size="20" value="' . $row['fab1'] . '" /></div>';
    echo '</div>';
}       echo '</div>';

//Nonconformity, Disposition, Comments and Comments & Additional Details
        echo '<div id="box5">';
            if (empty($row['non'])) $row['non'] = "Empty";
            if (empty($row['dis'])) $row['dis'] = "Empty";
            if (empty($row['comm'])) $row['comm'] = "Empty";
            if (empty($row['caad'])) $row['caad'] = "Empty";

            echo '<div id="non"><span class="b">Nonconformity:&nbsp;&nbsp;</span><textarea rows="4" cols="105">' . $row['non'] . '</textarea></div>';
            echo '<div id="dis"><span class="b">Disposition:&nbsp;&nbsp;</span><textarea rows="4" cols="105">' . $row['dis'] . '</textarea></div>';
            echo '<div id="comm"><span class="b">Comments:&nbsp;&nbsp;</span><textarea rows="4" cols="105">' . $row['comm'] . '</textarea></div>';
            echo '<div id="caad"><span class="b">Comments and/or Additional Details:&nbsp;&nbsp;</span><textarea rows="4" cols="105">' . $row['caad'] . '</textarea></div>';

                echo '<div id="podr">';
                        if (empty($row['po'])) $row['po'] ="Empty";
                        if (empty($row['pod'])) $row['pod'] ="Empty";
                        if (empty($row['dir'])) $row['dri'] ="Empty";

                    echo '<div id="po"><span class="b">PO:&nbsp;&nbsp;</span><input type="text" name="po"  size="7" value="' . $row['po'] . '" /></div>';
                    echo '<div id="pod"><span class="b">PO Date:&nbsp;&nbsp;</span><input type="text" name="pod"  size="7" value="' . $row['pod'] . '" /></div>';
                    echo '<div id="dri"><span class="b">Date Received:&nbsp;&nbsp;</span><input type="text" name="dri"  size="7" value="' . $row['dri'] . '" /></div>';
                echo '</div>';
            echo '<div id="button2"><input type="submit" value="Submit Edits" name="submit" /></div>';
        echo '</div>';
    echo '</fieldset>';
echo '</form>';
        }
    }

echo '</div>';

?>
</body>
</html>

3 个答案:

答案 0 :(得分：1)

您需要清除用户的所有输入。如果$ GET或$ POST与查询字符串存在于同一行，则需要像以下那样对其进行转义：

$query = "SELECT * FROM ncmr WHERE id = '" . $_GET['id'] . "'";

更好的是，你已经在使用mysqli了，所以请改用预备语句。

如果您正在使用mysqli，您可能正在使用InnoDB，并且可能隐式启用了事务，并且连接的自动提交已关闭，因此您可能不会提交事务，至少如果有的话影响。尝试在关闭前添加mysqli_commit（），看看它是否有帮助。

通常，在开发模式下，您可能需要检查php.ini是否有错误报告，并检查Web服务器上的error_log以查看是否报告了错误。如果查询失败，它可能不会显示在页面输出上，但它可能会显示在错误日志中。

答案 1 :(得分：1)

您的表单方法为POST，因此您需要添加hidden字段以嵌入/保存ID（来自$ _GET的值），因此当您提交此表单时，您将获得textarea以及使用$_POST['id']的正确ID值。

我删除了一些不相关的陈述。

.....
.....
<?php

  $id=0;
  if(isset($_GET['id']))
     $id=$_GET['id'];

  if (isset($_POST['submit'])) {
        $id=$_POST["id"];
        $dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);

        $ncmrsr = mysqli_real_escape_string($dbc, trim($_POST['ncmrsr']));
        $ncmrsc = mysqli_real_escape_string($dbc, trim($_POST['ncmrsc']));

        $query = "UPDATE ncmr SET ncmrsr = '$ncmrsr', ncmrsc = '$ncmrsc' WHERE id = $id";
        $result=mysqli_query($dbc, $query);
        if($result)
            echo '<p>Your comments have been successfully entered. Please <a href="list.php">return to the admin page</a> to view the final report!</p>';
            mysqli_close($dbc);
   }
   else
   {    
     if(!isset($_GET['id']))
       {
         header("Location: list.php");
         exit();
       }


      $dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
      $query = "SELECT * FROM ncmr WHERE id = $id";

      $data = mysqli_query($dbc, $query);

     if (mysqli_num_rows($data) == 1) {
         // The user row was found so display the user data
            $row = mysqli_fetch_array($data);
            echo'<div id="title"><h3 id="NCMR2">Non-Conforming Materials Report (NCMR:&nbsp;&nbsp;' . $row['rma'] . ')</h3></div>';
            echo "<form action='".$_SERVER['PHP_SELF']."' method='post'>";
            echo '<fieldset>';

            echo '<div id="box6">';
            // We know both $ncmrsr AND $ncmrsc are blank
            if (empty($row['ncmrsr']) && empty($row['ncmrsc'])) {
            // add comment.
                echo '<div id="ncmrsr"><span class="b">NCMR Supplier Response:<br /></span><textarea name="ncmrsr" rows="6" cols="105" ></textarea></div>';
                echo '<div id="ncmrsc"><span class="b">NCMR Supplier Comment:<br /></span><textarea name="ncmrsc" rows="6" cols="105" ></textarea></div>'; 

                echo '<div id="button2"><input type="submit" name="submit" value="Add Comment" /></div>';
                //Save ID so it can be used with POST request.
                echo "<input type='hidden' value='$id' name='id'/>"; 
                }
else {
            // echo the two fields.
            if (empty($row['ncmrsr'])) $row['ncmrsr'] ="Empty";
            if (empty($row['ncmrsc'])) $row['ncmrsc'] ="Empty";
                echo '<div id="ncmrsr"><span class="b">NCMR Supplier Response:</span><br />' . $row['ncmrsr'] . '</div>';
                echo '<div id="ncmrsc"><span class="b">NCMR Supplier Comment:</span><br />' . $row['ncmrsc'] . '</div>';
        echo '</div>';
    echo '</fieldset>';
echo '</form>';
}

   }
  // End of check for a single row of user results
    else {
    echo '<p class="error">Please contact the web administrator, there seems to be an error!</p>';
  }

  mysqli_close($dbc);
  }
echo '</div>';

?>
</body> 
</html>

答案 2 :(得分：0)

我建议您测试 mysqli_query（$ dbc，$ query）是否成功

if (mysqli_query($dbc, $query)) {
    echo '<p>Your comments have been successfully entered. Please <a href="list.php">return to the admin page</a> to view the final report!</p>';
} else {
    echo mysqli_error($dbc);
}
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