Question

运行时出现MySQL错误：

1972-11-08AlfredLibrejaCorallesLakeShore140 Rosal Street Loma Biñan Laguna
Notice: Undefined index: myfile in C:\xampp\htdocs\taugamma\update_member.php on line 13

Notice: Undefined index: idd in C:\xampp\htdocs\taugamma\update_member.php on line 14
Error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''' at line 12

这是我的代码： update_member.php

$bd1 = $_POST['bd1'];
$bd2 = $_POST['bd2'];
$bd3 = $_POST['bd3'];
echo $bd = mysqli_real_escape_string($con, ($bd1 . '-' . $bd2 . '-' . $bd3));
echo $fname = mysqli_real_escape_string($con, $_POST['fname']);
echo $lname = mysqli_real_escape_string($con, $_POST['lname']);
echo $mname = mysqli_real_escape_string($con, $_POST['shadow']);
echo $mchapter = mysqli_real_escape_string($con, $_POST['pob']);
echo $address = mysqli_real_escape_string($con, $_POST['address']);
echo $photo = mysqli_real_escape_string($con, $_FILES['myfile']['name']);
echo $id = mysqli_real_escape_string($con, $_POST['idd']);

    $query = "UPDATE
            tblmembers
          SET
            firstName     = '" . $fname . "', 
            lastName      = '" . $lname . "', 
            middleName    = '" . $mname . "', 
            birthday      = '" . $bd . "', 
            motherChapter = '" . $mchapter . "', 
            address       = '" . $address . "', 
            photo         = '" . $photo . "'
          WHERE
            ID  =  " . $id . "'";
    if(!mysqli_query($con,$query)){
        echo 'Error' . mysqli_error($con);
    }else{
header("Location: show_all.php");
}
mysqli_close($con);
?>

这是我的HTML或表单代码， update.html

<form action="update_member.php" method="post">
                <table border="0" width="100%" height="1400px">
                    <tr>
                        <td colspan="4" width="15%" style="background-color: #191919;"></td>
                        <td colspan="4" height="5%" style="font-size: 20px; font-weight: bold; background-color: #191919; color: #FFF056;">
                        <span>Update Member Data</span>
                        </td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;"></td>
                        <td height="3%" class="labels">ID:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="text" value="<?php echo $_POST['ided'] ?>" name="idd" disabled></td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;"></td>
                        <td height="3%" class="labels">Firstname:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="text" value="<?php echo $_POST['fName'] ?>" onkeydown="return alphaOnly(event)" name="fname"></td>
                    </tr>

                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;"></td>
                        <td height="3%" class="labels">Lastname:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="text" value="<?php echo $_POST['lName'] ?>" onkeydown="return alphaOnly(event)" name="lname"></td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;"></td>
                        <td height="3%" class="labels">Middlename:&nbsp;&nbsp;</td>
                        <td>&nbsp;
                        <input type="text" onkeydown="return alphaOnly(event)" value="<?php echo $_POST['mName'] ?>" id="shadow" name="shadow">
                        </td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;"></td>
                        <td height="3%" class="labels">Birthday:&nbsp;&nbsp;</td>
                        <td>
                        &nbsp;&nbsp;<input type="text" maxlength="4" size="3" name="bd1" id="bd1" value="<?php echo $_POST['bd1'] ?>" onkeypress="return isNumberKey(event)"> / <input type="text" value="<?php echo $_POST['bd2'] ?>" size="1" name="bd2" maxlength="2" onkeypress="return isNumberKey(event)"> / <input type="text" value="<?php echo $_POST['bd3'] ?>" maxlength="2" size="1" name="bd3" onkeypress="return isNumberKey(event)"> yyyy / mm / dd
                        </td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td width="10%" style="background-color: 191919;"></td>
                        <td height="3%" class="labels">Mother Chapter:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="text" name="pob" value="<?php echo $_POST['mChapter'] ?>" onkeydown="return alphaOnly(event)"></td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;" width="10%"></td>
                        <td height="3%" class="labels">Address:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="text" value="<?php echo $_POST['address'] ?>" name="address"></td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;" width="10%"></td>
                        <td height="3%" class="labels">I.D. No.:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="text" value="<?php echo $_POST['idNum'] ?>" name="idnum"></td>
                    </tr>
                    <tr>
                        <td colspan="4">
                        </td>
                        <td style="background-color: 191919;" width="10%"></td>
                        <td height="3%" class="labels">Photo:&nbsp;&nbsp;</td>
                        <td>&nbsp;&nbsp;<input type="file" id="myfile" name="myfile"></td>
                    </tr>
                    <tr>
                        <td colspan="4" style="background-color: 191919;"></td>
                        <td width="10%" height="3%" style="background-color: 191919;"></td>
                        <td style="background-color: 191919;">

                        </td>
                        <td width="60%" style="background-color: 191919;">
                        &nbsp;&nbsp;<input type="submit" onclick="showFileName()">
                        </td>
                    </tr>
                    <tr>
                        <td colspan="7"></td>
                    </tr>
                </table>
                </form>

它直接转到show_all.php并没有给出任何错误，但它没有任何改变。：（

Answer 1

您没有关闭$id附近的报价：

WHERE
    ID  =  " . $id . "'";

换句话说，它应该是：

WHERE
    ID = '" . $id . "'";

Answer 2

在更改标题位置之前，您的标题重定向将无法正常输出（使用echo）。

所以你要么：

if(!mysqli_query($con,$query)){
        echo 'Error' . mysqli_error($con); // print your error to the screen
} else{
    header("Location: show_all.php"); // do nothing as you've already echo'd further up the script
}

Answer 3

主要错误来自此

  $_POST['idd']

和

  $_FILES['myfile']

修复idd来自哪里，即使你修复了查询，你也会从该变量$ id和$ photo中得到错误。

，您的查询应该是那样的

  WHERE
        ID  =  '" . $id . "' ";

               ^---you missed single quote here

Answer 4

要解决第一个通知：确保您在名为“myfile”的表单字段下发布文件。

echo $photo = mysqli_real_escape_string($con, $_FILES['myfile']['name']);

如果文件（照片）是可选的，您可以这样做：

echo $ photo = mysqli_real_escape_string（$ con，（isset（$ _ FILES ['myfile']）？$ _FILES ['myfile'] ['name']：“”）;

修复第二通知：确保post变量的真实名称是“idd”

echo $id = mysqli_real_escape_string($con, $_POST['idd']);

然后，删除“在这一行

”

 ID  =  " . $id . "'";

php页面没有更新

4 个答案: