Question

** 两种答案都是正确的 **

我的问题是我们有一个用户可以在我的数据库中的表格中添加数据，我们将其称为教育，我们希望他们能够编辑此信息。我们的问题是，当他们点击下一个按钮加载用户可能拥有的下一个数据时，我们找不到一种方法来赋予他们能力。例如，如下图所示，用户可以在表格中有多个条目： enter image description here 我们有这样的形式：

enter image description here

在这种形式下，我们实现了获取第一个数据（ id = 1 ）但我们如何获得该用户的下一个数据。重要的是要注意用户可以有多个条目，例如2,3,4或更多。所以我们想要他们点击下一个按钮来更新当前值，然后向他们显示下一个数据这是我们的代码：

<?php
    include("../include/session.php");
    $username = $_SESSION['username'];


if($query = mysql_query("SELECT school,degree,website,start_date,end_date,start_year,end_year,degree_description FROM education WHERE id='1' AND username='$username'") or die(mysql_error()))
{
    if(mysql_num_rows($query)>=1){
        while($row = mysql_fetch_array($query)) {
        $school = $row['school'];
        $degree = $row['degree'];
        $website = $row['website'];
        $start_date = $row['start_date'];
        $end_date = $row['end_date'];
        $start_year = $row['start_year'];
        $end_year = $row['end_year'];
        $degree_description = $row['degree_description'];
        }
    }
    else{
        echo 'No entry found. <a href="javascript:history.back()">Go back</a>';
    }
}

?>
<title>CV Education Form</title>
<form method="post" action="education_update.php">
<input type="hidden" name="submitted" value="true" />
<fieldset>
    <legend>Education</legend>
    <label>School <input type="text" name="school" value=<?=$school?> required="required" /> </label>
    <br /><br />
    <label>Degree <input type="text" name="degree" value=<?=$degree?> required="required"/> </label>
    <br /><br />
    <label>Website <input type="text" name="website" value=<?=$website?> /> </label>
    <br /><br />
    <label>Start Date</label>
        <select name="start_date">
        <option value=<?=$start_date?>><?=$start_date?></option>
        <option value="January">January</option>
        <option value="February">February</option>
        <option value="March">March</option>
        <option value="April">April</option>
        <option value="May">May</option>
        <option value="June">June</option>
        <option value="July">July</option>
        <option value="August">August</option>
        <option value="September">September</option>
        <option value="October">October</option>
        <option value="November">Noember</option>
        <option value="December">December</option>
        </select>
    <br /><br />
    <label>End Date</label>
        <select name="end_date">
        <option value=<?=$end_date?>><?=$end_date?></option>
        <option value="January">January</option>
        <option value="February">February</option>
        <option value="March">March</option>
        <option value="April">April</option>
        <option value="May">May</option>
        <option value="June">June</option>
        <option value="July">July</option>
        <option value="August">August</option>
        <option value="September">September</option>
        <option value="October">October</option>
        <option value="November">Noember</option>
        <option value="December">December</option>
        </select>
    <br /><br />
        <label> Start Year</label>
        <select name="start_year" >
        <option value=<?=$start_year?>><?=$start_year?></option>
        <option value="1979">1979</option>
        <option value="1980">1980</option>
        <option value="1981">1981</option>
        <option value="1982">1982</option>
        <option value="1983">1983</option>
        <option value="1984">1984</option>
        <option value="1985">1985</option>
        <option value="1986">1986</option>
        <option value="1987">1987</option>
        <option value="1988">1988</option>
        <option value="1989">1989</option>
        <option value="1990">1990</option>
        <option value="1991">1991</option>
        <option value="1992">1992</option>
        <option value="1993">1993</option>
        <option value="1994">1994</option>
        <option value="1995">1995</option>
        <option value="1996">1996</option>
        <option value="1997">1997</option>
        <option value="1998">1998</option>
        <option value="1999">1999</option>
        <option value="2000">2000</option>
        </select>
        <label>End Year</label>
        <select name="end_year">
        <option value=<?=$end_year?>><?=$end_year?></option>
        <option value="1979">1979</option>
        <option value="1980">1980</option>
        <option value="1981">1981</option>
        <option value="1982">1982</option>
        <option value="1983">1983</option>
        <option value="1984">1984</option>
        <option value="1985">1985</option>
        <option value="1986">1986</option>
        <option value="1987">1987</option>
        <option value="1988">1988</option>
        <option value="1989">1989</option>
        <option value="1990">1990</option>
        <option value="1991">1991</option>
        <option value="1992">1992</option>
        <option value="1993">1993</option>
        <option value="1994">1994</option>
        <option value="1995">1995</option>
        <option value="1996">1996</option>
        <option value="1997">1997</option>
        <option value="1998">1998</option>
        <option value="1999">1999</option>
        <option value="2000">2000</option>
        </select>      
    <br /><br />
<label>Degree Description</label>
    <br />
    <textarea rows="4" cols="50" name="degree_description" required><?=$degree_description?></textarea> </label>
</fieldset>
<input type="submit" value="Update" name="submit"/>
<input type="submit" value="Next" name="next"/>
</form>

我更新内容的PHP代码如下：

<?php
    mysql_connect('localhost', 'root', 'smogi') or die(mysql_error());
    mysql_select_db("cvtool") or die(mysql_error());
    include("../include/session.php");
    $username = $_SESSION["username"];

    $school = mysql_real_escape_string($_POST["school"]);
    $degree = mysql_real_escape_string($_POST["degree"]);
    $website = mysql_real_escape_string($_POST["website"]);
    $start_date = mysql_real_escape_string($_POST["start_date"]);
    $end_date = mysql_real_escape_string($_POST["end_date"]);
    $start_year = mysql_real_escape_string($_POST["start_year"]);
    $end_year = mysql_real_escape_string($_POST["end_year"]);
    $degree_description = mysql_real_escape_string($_POST["degree_description"]);

    $query="UPDATE education
            SET school = '$school', degree = '$degree', website = '$website', start_date='$start_date', end_date='$end_date', start_year='$start_year', end_year='$end_year', degree_description='$degree_description'
            WHERE username='$username'";

mysql_query($query)or die(mysql_error());
if(mysql_affected_rows()>=1){
    echo "<p>($username) Record Updated<p>";
}else{
    echo "<p>($username) Not Updated<p>";
}

?>

Answer 1

更新：为了达到你想要的效果，你需要将两个脚本混合在一起。因此，对于更新脚本，您需要添加第一个脚本的逻辑。试试这个：

在您的表单中，您可以发送隐藏字段，并更新最后一个ID：

    <input type="hidden" name="id" value="<?php echo $id;?>" />

这个Id可以在上面的php代码中设置如下：

    if(isset($_POST['id']))
      $id = $_POST['id'];
    else
      //first time, initialize as you wish. Probably need to get the first id for this user, using another query
      $id = 1;

然后您的查询必须修改如下，以仅获取下一条记录：

    if($query = mysql_query("SELECT school,degree,website,start_date,end_date,start_year,end_year,degree_description FROM education WHERE id>'$id' AND username='$username' order by id asc limit 1") or die(mysql_error()))

以下是您的完整代码：

 <?php
        mysql_connect('localhost', 'root', 'smogi') or die(mysql_error());
        mysql_select_db("cvtool") or die(mysql_error());
        include("../include/session.php");
        $username = $_SESSION["username"];

    if(isset($_POST['id']))
          $id = $_POST['id'];
        else
          //first time, initialize as you wish. Probably need to get the first id for this user, using another query
          $id = 1;

        $school = mysql_real_escape_string($_POST["school"]);
        $degree = mysql_real_escape_string($_POST["degree"]);
        $website = mysql_real_escape_string($_POST["website"]);
        $start_date = mysql_real_escape_string($_POST["start_date"]);
        $end_date = mysql_real_escape_string($_POST["end_date"]);
        $start_year = mysql_real_escape_string($_POST["start_year"]);
        $end_year = mysql_real_escape_string($_POST["end_year"]);
        $degree_description = mysql_real_escape_string($_POST["degree_description"]);

        $query="UPDATE education
                SET school = '$school', degree = '$degree', website = '$website', start_date='$start_date', end_date='$end_date', start_year='$start_year', end_year='$end_year', degree_description='$degree_description'
                WHERE id='$id'";

    mysql_query($query)or die(mysql_error());
    if(mysql_affected_rows()>=1){
        echo "<p>($username) Record Updated<p>";
    }else{
        echo "<p>($username) Not Updated<p>";
    }

    if($query = mysql_query("SELECT school,degree,website,start_date,end_date,start_year,end_year,degree_description FROM education WHERE id>'$id' AND username='$username' order by id asc limit 1") or die(mysql_error()))
    {
        if(mysql_num_rows($query)>=1){
            while($row = mysql_fetch_array($query)) {
            $school = $row['school'];
            $degree = $row['degree'];
            $website = $row['website'];
            $start_date = $row['start_date'];
            $end_date = $row['end_date'];
            $start_year = $row['start_year'];
            $end_year = $row['end_year'];
            $degree_description = $row['degree_description'];
            }
        }
        else{
            echo 'No entry found. <a href="javascript:history.back()">Go back</a>';
        }
    }

    ?>
    <title>CV Education Form</title>
    <form method="post" action="education_update.php">
    <input type="hidden" name="submitted" value="true" />
    <fieldset>
        <legend>Education</legend>
        <label>School <input type="text" name="school" value=<?=$school?> required="required" /> </label>
        <br /><br />
        <label>Degree <input type="text" name="degree" value=<?=$degree?> required="required"/> </label>
        <br /><br />
        <label>Website <input type="text" name="website" value=<?=$website?> /> </label>
        <br /><br />
        <label>Start Date</label>
            <select name="start_date">
            <option value=<?=$start_date?>><?=$start_date?></option>
            <option value="January">January</option>
            <option value="February">February</option>
            <option value="March">March</option>
            <option value="April">April</option>
            <option value="May">May</option>
            <option value="June">June</option>
            <option value="July">July</option>
            <option value="August">August</option>
            <option value="September">September</option>
            <option value="October">October</option>
            <option value="November">Noember</option>
            <option value="December">December</option>
            </select>
        <br /><br />
        <label>End Date</label>
            <select name="end_date">
            <option value=<?=$end_date?>><?=$end_date?></option>
            <option value="January">January</option>
            <option value="February">February</option>
            <option value="March">March</option>
            <option value="April">April</option>
            <option value="May">May</option>
            <option value="June">June</option>
            <option value="July">July</option>
            <option value="August">August</option>
            <option value="September">September</option>
            <option value="October">October</option>
            <option value="November">Noember</option>
            <option value="December">December</option>
            </select>
        <br /><br />
            <label> Start Year</label>
            <select name="start_year" >
            <option value=<?=$start_year?>><?=$start_year?></option>
            <option value="1979">1979</option>
            <option value="1980">1980</option>
            <option value="1981">1981</option>
            <option value="1982">1982</option>
            <option value="1983">1983</option>
            <option value="1984">1984</option>
            <option value="1985">1985</option>
            <option value="1986">1986</option>
            <option value="1987">1987</option>
            <option value="1988">1988</option>
            <option value="1989">1989</option>
            <option value="1990">1990</option>
            <option value="1991">1991</option>
            <option value="1992">1992</option>
            <option value="1993">1993</option>
            <option value="1994">1994</option>
            <option value="1995">1995</option>
            <option value="1996">1996</option>
            <option value="1997">1997</option>
            <option value="1998">1998</option>
            <option value="1999">1999</option>
            <option value="2000">2000</option>
            </select>
            <label>End Year</label>
            <select name="end_year">
            <option value=<?=$end_year?>><?=$end_year?></option>
            <option value="1979">1979</option>
            <option value="1980">1980</option>
            <option value="1981">1981</option>
            <option value="1982">1982</option>
            <option value="1983">1983</option>
            <option value="1984">1984</option>
            <option value="1985">1985</option>
            <option value="1986">1986</option>
            <option value="1987">1987</option>
            <option value="1988">1988</option>
            <option value="1989">1989</option>
            <option value="1990">1990</option>
            <option value="1991">1991</option>
            <option value="1992">1992</option>
            <option value="1993">1993</option>
            <option value="1994">1994</option>
            <option value="1995">1995</option>
            <option value="1996">1996</option>
            <option value="1997">1997</option>
            <option value="1998">1998</option>
            <option value="1999">1999</option>
            <option value="2000">2000</option>
            </select>      
        <br /><br />
    <label>Degree Description</label>
        <br />
        <textarea rows="4" cols="50" name="degree_description" required><?=$degree_description?></textarea> </label>
    </fieldset>
    <input type="hidden" name="id" value="<?php echo $id;?>" />
    <input type="submit" value="Update" name="submit"/>
    <input type="submit" value="Next" name="next"/>
    </form>

Answer 2

这可以满足您的需求：

<?php
            mysql_connect('localhost', 'root', 'smogi') or die(mysql_error());
            mysql_select_db("cvtool") or die(mysql_error());
            include("../include/session.php");
            $username = $_SESSION["username"];

        if(isset($_POST['id'])){
            // $_POST['id'] is set so the user got here by submiting the form below
            // update the row using the id passed in by the hidden field on the form 
            $id = mysql_real_escape_string($_POST['id']);
            $school = mysql_real_escape_string($_POST["school"]);
            $degree = mysql_real_escape_string($_POST["degree"]);
            $website = mysql_real_escape_string($_POST["website"]);
            $start_date = mysql_real_escape_string($_POST["start_date"]);
            $end_date = mysql_real_escape_string($_POST["end_date"]);
            $start_year = mysql_real_escape_string($_POST["start_year"]);
            $end_year = mysql_real_escape_string($_POST["end_year"]);
            $degree_description = mysql_real_escape_string($_POST["degree_description"]);

            $query="UPDATE education
                    SET school = '$school', degree = '$degree', website = '$website', start_date='$start_date', end_date='$end_date', start_year='$start_year', end_year='$end_year', degree_description='$degree_description'
                    WHERE id='$id'";

            mysql_query($query)or die(mysql_error());
            if(mysql_affected_rows()>=0){
                echo "<p>($username) Record Updated<p>";
            }else{
                echo "<p>($username) Not Updated<p>";
            }
            // after updating the row, get the next row for this user
            if($query = mysql_query("SELECT id,school,degree,website,start_date,end_date,start_year,end_year,degree_description FROM education WHERE id>'$id' AND username='$username' order by id asc limit 1") or die(mysql_error())){

                if(mysql_num_rows($query)>=1){
                    while($row = mysql_fetch_array($query)) {
                    $school = $row['school'];
                    $degree = $row['degree'];
                    $website = $row['website'];
                    $start_date = $row['start_date'];
                    $end_date = $row['end_date'];
                    $start_year = $row['start_year'];
                    $end_year = $row['end_year'];
                    $degree_description = $row['degree_description'];
                    $id = $row['id'];
                    }
                }
                else{
                    echo 'No entry found. <a href="javascript:history.back()">Go back</a>';
                }
            }


        }

        else{
          // user came to the page for the first time, 
          // not by submiting the form, get the 
          // first id for this user, using another query
          if($query = mysql_query("SELECT id,school,degree,website,start_date,end_date,start_year,end_year,degree_description FROM education WHERE username='$username' order by id asc limit 1") or die(mysql_error())){

              if(mysql_num_rows($query)>=1){
                  while($row = mysql_fetch_array($query)) {
                  $school = $row['school'];
                  $degree = $row['degree'];
                  $website = $row['website'];
                  $start_date = $row['start_date'];
                  $end_date = $row['end_date'];
                  $start_year = $row['start_year'];
                  $end_year = $row['end_year'];
                  $degree_description = $row['degree_description'];
                  $id = $row['id'];
                  }
              }
              else{
                  echo 'No entry found. <a href="javascript:history.back()">Go back</a>';
              }
          }
        }



        ?>
        <title>CV Education Form</title>
        <form method="post" action="edit_education.php">
        <input type="hidden" name="submitted" value="true" />
        <fieldset>
            <legend>Education</legend>
            <label>School <input type="text" name="school" value=<?=$school?> required="required" /> </label>
            <br /><br />
            <label>Degree <input type="text" name="degree" value=<?=$degree?> required="required"/> </label>
            <br /><br />
            <label>Website <input type="text" name="website" value=<?=$website?> /> </label>
            <br /><br />
            <label>Start Date</label>
                <select name="start_date">
                <option value=<?=$start_date?>><?=$start_date?></option>
                <option value="January">January</option>
                <option value="February">February</option>
                <option value="March">March</option>
                <option value="April">April</option>
                <option value="May">May</option>
                <option value="June">June</option>
                <option value="July">July</option>
                <option value="August">August</option>
                <option value="September">September</option>
                <option value="October">October</option>
                <option value="November">Noember</option>
                <option value="December">December</option>
                </select>
            <br /><br />
            <label>End Date</label>
                <select name="end_date">
                <option value=<?=$end_date?>><?=$end_date?></option>
                <option value="January">January</option>
                <option value="February">February</option>
                <option value="March">March</option>
                <option value="April">April</option>
                <option value="May">May</option>
                <option value="June">June</option>
                <option value="July">July</option>
                <option value="August">August</option>
                <option value="September">September</option>
                <option value="October">October</option>
                <option value="November">Noember</option>
                <option value="December">December</option>
                </select>
            <br /><br />
                <label> Start Year</label>
                <select name="start_year" >
                <option value=<?=$start_year?>><?=$start_year?></option>
                <option value="1979">1979</option>
                <option value="1980">1980</option>
                <option value="1981">1981</option>
                <option value="1982">1982</option>
                <option value="1983">1983</option>
                <option value="1984">1984</option>
                <option value="1985">1985</option>
                <option value="1986">1986</option>
                <option value="1987">1987</option>
                <option value="1988">1988</option>
                <option value="1989">1989</option>
                <option value="1990">1990</option>
                <option value="1991">1991</option>
                <option value="1992">1992</option>
                <option value="1993">1993</option>
                <option value="1994">1994</option>
                <option value="1995">1995</option>
                <option value="1996">1996</option>
                <option value="1997">1997</option>
                <option value="1998">1998</option>
                <option value="1999">1999</option>
                <option value="2000">2000</option>
                </select>
                <label>End Year</label>
                <select name="end_year">
                <option value=<?=$end_year?>><?=$end_year?></option>
                <option value="1979">1979</option>
                <option value="1980">1980</option>
                <option value="1981">1981</option>
                <option value="1982">1982</option>
                <option value="1983">1983</option>
                <option value="1984">1984</option>
                <option value="1985">1985</option>
                <option value="1986">1986</option>
                <option value="1987">1987</option>
                <option value="1988">1988</option>
                <option value="1989">1989</option>
                <option value="1990">1990</option>
                <option value="1991">1991</option>
                <option value="1992">1992</option>
                <option value="1993">1993</option>
                <option value="1994">1994</option>
                <option value="1995">1995</option>
                <option value="1996">1996</option>
                <option value="1997">1997</option>
                <option value="1998">1998</option>
                <option value="1999">1999</option>
                <option value="2000">2000</option>
                </select>      
            <br /><br />
        <label>Degree Description</label>
            <br />
            <textarea rows="4" cols="50" name="degree_description" required><?=$degree_description?></textarea> </label>
        </fieldset>
        <input type="text" name="id" value="<?php echo $id;?>" />
        <input type="submit" value="Update" name="submit"/>
        <input type="submit" value="Next" name="next"/>
        </form>

编辑表单无法获取同一用户的下一个数据

2 个答案: