PHP MYSQLi不会从表中更新

时间：2019-12-07 08:26:52

标签： php mysqli insert-update sequelpro

在我的PHP类中，我们必须显示数据库中的信息，然后才能删除条目或编辑条目。我正在使用WAMP和Sequel Pro。它可以毫无问题地显示信息，删除按钮可以正常工作，所以我知道它正在与数据库通信，但是我无法在数据库中更新信息。我尝试了许多错误报告方法，但没有错误。甚至代码说它可以做到这一点，它也可以做到。我尝试将其移动到代码中的不同位置，使其成为自己的区域，但是没有任何效果。我已经确保所有根特权都已检查，所以我知道这不是问题。因此，如果有人可以帮助我，我将不胜感激。

以下是更新代码本身：

if(isset($_POST['update_prof'])) {

    $update_id = $_POST['update_prof'];
    $ins_first_name = $_POST['ins_first_name'];
    $ins_last_name = $_POST['ins_last_name'];
    $ins_college = $_POST['ins_college'];
    $ins_senority_date = $_POST['ins_senority_date'];


    $update_prof = "UPDATE instructorInf SET 
    ins_first_name='$ins_first_name', 
    ins_last_name='$ins_last_name', 
    ins_college='$ins_college', 
    ins_senority_date='$ins_senority_date' 
    WHERE ins_id='$update_id'"; 

    $run_update = mysqli_query($dbc, $update_prof) or die(mysqli_error());
    //echo "<script>alert('Something Happened!')</script>";
    //echo mysql_error();

    // REFRESH PAGE ON UPDATE
    if($run_update){
    //echo "<script>alert('Professor has been updated!')</script>";
    echo '<script>window.location = "http://localhost:8888/Lab6_Johnny_Bruner.php";</script>';
    } 
}

这是表格的代码：

<form action="'. $_SERVER['PHP_SELF'] .'" enctype="multipart/form-data" method="post">
    <table width="500px"
           style="padding-top:15px; padding-bottom:15px; border-bottom-width: thick; border-bottom-style: double; border-bottom-color: #EC008B;">
        <tr>
            <td rowspan="5" valign="middle" align="center" width="100px">
                <input name="thisID" type="hidden" value="'. $ins_id .'"/>
                <a href="?update_prof='. $ins_id .'" onclick="return confirm(\'Are you sure you want to UPDATE?\');">
                    <input class="button" type="submit" name="update_prof"
                           style="color:white; background-color:green; text-weight:bold;" value="UPDATE"/></a>
                <a href="?delete_prof='. $ins_id .'" onclick="return confirm(\'Are you sure you want to DELETE?\');">
                    <input class="button" type="button" name="delete_prof" value="DELETE"/></a>
            </td>
            <td align="right" width="200px">
                Professor ID:
            </td>
            <td>
                <strong>'. $ins_id .'</strong>
            </td>
        </tr>
        <tr>
            <td align="right">
                Professor First Name:
            </td>
            <td>
                <input type="text" name="ins_first_name" value=" '. $ins_first_name .'"/>
            </td>
        </tr>
        <tr>
            <td align="right">
                Professor Last Name:
            </td>
            <td>
                <input type="text" name="ins_last_name" value=" '. $ins_last_name .'"/>
            </td>
        </tr>
        <tr>
            <td align="right">
                College of:
            </td>
            <td>
                <input type="text" name="ins_college" value=" '. $ins_college .'"/>
            </td>
        </tr>
        <tr>
            <td align="right">
                Professor Senority:
            </td>
            <td>
                <input type="text" name="ins_senority_date" value=" '. $ins_senority_date .'"/>
            </td>
        </tr>
    </table>
</form>

这是完整的代码：

<!DOCTYPE HTML>

<html>
    <head>
        <title>CSC306 - Lab 6 - Johnny Bruner</title>

        <style>
            h1 {
                text-align: center;
                padding-top: 50px;
            }
            table {
                margin-left: auto;
                margin-right: auto;
            }
        </style>
    </head>

<?php

ini_set('display_errors', 1); 
ini_set('display_startup_errors', 1); 
error_reporting(E_ALL);   

// CONNECT TO DATABASE
$dbc = mysqli_connect("localhost", "root", "password", "CSC306Class");
if (mysqli_connect_errno()) {
    echo "The Connection was not established: " . mysqli_connect_error();
}  
 // echo "Connected successfully";  
// START FUNCTION TO GET STUDENT INFORMATION    
function getProfessors(){

    // CONNECT TO DB
    global $dbc;

    // UPDATE ENTRY
        if(isset($_POST['update_prof'])){

            $update_id = $_POST['update_prof'];
            $ins_first_name = $_POST['ins_first_name'];
            $ins_last_name = $_POST['ins_last_name'];
            $ins_college = $_POST['ins_college'];
            $ins_senority_date = $_POST['ins_senority_date'];


            $update_prof = "UPDATE instructorInf SET 
            ins_first_name='$ins_first_name', 
            ins_last_name='$ins_last_name', 
            ins_college='$ins_college', 
            ins_senority_date='$ins_senority_date' 
            WHERE ins_id='$update_id'"; 

            $run_update = mysqli_query($dbc, $update_prof) or die(mysqli_error());
            //echo "<script>alert('Something Happened!')</script>";
            //echo mysql_error();

        // REFRESH PAGE ON UPDATE
        if($run_update){
            //echo "<script>alert('Professor has been updated!')</script>";
            echo '<script>window.location = "http://localhost:8888/Lab6_Johnny_Bruner.php";</script>';
        } 
        }

    // CONNECT TO TABLE
    $get_prof = 'SELECT * FROM instructorInf ORDER BY ins_id ASC';
    $run_prof = mysqli_query($dbc, $get_prof);

    $count_prof = mysqli_num_rows($run_prof);
    if($count_prof==0){ 
       echo '<h2 style=padding:20px;">No professors where found, Please check back soon!</h2>';
    }

    // FETCH INFORMATION
    while ($row_prof_new=mysqli_fetch_array($run_prof)) {
        $ins_id = $row_prof_new['ins_id'];
        $ins_first_name = $row_prof_new['ins_first_name'];
        $ins_last_name = $row_prof_new['ins_last_name'];
        $ins_college = $row_prof_new['ins_college'];
        $ins_senority_date = $row_prof_new['ins_senority_date'];

    // DISPLAY INFORMATION 
    echo '<form action="'. $_SERVER['PHP_SELF'] .'" enctype="multipart/form-data" method="post">

    <table width="500px" style="padding-top:15px; padding-bottom:15px; border-bottom-width: thick; border-bottom-style: double; border-bottom-color: #EC008B;">

            <tr>
                <td rowspan="5" valign="middle" align="center" width="100px" >
                    <input name="thisID" type="hidden" value="'. $ins_id .'" />

                    <a href="?update_prof='. $ins_id .'" onclick="return confirm(\'Are you sure you want to UPDATE?\');" >
                    <input class="button" type="submit" name="update_prof" style="color:white; background-color:green; text-weight:bold;" value="UPDATE"  /></a>

                    <a href="?delete_prof='. $ins_id .'" onclick="return confirm(\'Are you sure you want to DELETE?\');" >
                    <input class="button" type="button" name="delete_prof" value="DELETE"  /></a>

                </td>

                <td align="right" width="200px">
                    Professor ID:
                </td>
                <td>
                    <strong>'. $ins_id .'</strong>
                </td>
            </tr>
            <tr>
                <td align="right">
                    Professor First Name:
                </td>
                <td>
                    <input type="text" name="ins_first_name" value=" '. $ins_first_name .'" />
                </td>
            </tr>
            <tr>
                <td align="right">
                    Professor Last Name:
                </td>
                <td>
                    <input type="text" name="ins_last_name" value=" '. $ins_last_name .'" />
                </td>
            </tr>
            <tr>
                <td align="right">
                    College of:
                </td>
                <td>
                    <input type="text" name="ins_college" value=" '. $ins_college .'" />
                </td>
            </tr>
            <tr>
                <td align="right">
                    Professor Senority:
                </td>
                <td>
                    <input type="text" name="ins_senority_date" value=" '. $ins_senority_date .'" />
                </td>
            </tr>
    </table>
    </form>';

        } 

        // DELETE ENTRY
        if(isset($_GET['delete_prof'])){

            $delete_id = $_GET['delete_prof'];

            $delete_prof = 'DELETE FROM instructorInf WHERE ins_id='. $delete_id. ''; 

            $run_delete = mysqli_query($dbc, $delete_prof);


       // REFRESH PAGE ON DELETE
        if($run_delete){
            echo '<script>window.location = "http://localhost:8888/Lab6_Johnny_Bruner.php";</script>';
        }
       }


}?>         
    <body>

        <h1>Student Information</h1>
        <?php //getStudents(); ?>

        <h1>Professor Information</h1>
        <?php getProfessors(); ?>

        <h1>Reviews</h1>
        <?php //getReviews(); ?>

    </body>
</html>

在此先感谢您的帮助！

0 个答案:

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