Question

MySQL数据库由以下列名组成：id，store，results，并且有350行。

我有一个名为＆＃34; Shuffle＆＃34;的按钮。当我单击该按钮时，我从MySQL数据库中打印出3个随机行（choiceshuffle.php）。每行结果都有一个＆＃34; Select＆＃34;按钮（访问getdata.php）

当我点击按钮＆＃34;选择＆＃34;在一行，列名＆＃34;记录＆＃34;应该以+1更新。

我可以在我发布的代码中使用+1更新该行，并获取消息＆＃34;更新Succesfull＆＃34;，但仅当我使用如下数字设置值时：

<input type="hidden" value="333" name="id" />

但我需要更新列名＆＃34;结果＆＃34;，在该ID上点击＆＃34;选择＆＃34;上。我以为我可以这样做：<input type="hidden" value="<?php $_POST['id']; ?>" name="id" />。使用此代码，我仍然收到消息＆＃34;更新了Succesfull＆＃34;，但没有行受到影响。

有人能看出我做错了什么吗？

的index.php

<form action="updaterecords.php" method="post">
  <input type="hidden" value="333" name="id" />
  <button type="submit" name="selectStore" >Select</button>
  <button type="button" data-dismiss="modal">Close</button>
</form>

updaterecords.php

<?php error_reporting(E_ALL); ini_set('display_errors', 1);
if (mysqli_connect_errno()) { echo "Error: no connexion allowed : " . mysqli_connect_error($mysqli); } 
?>
    <?php
        include 'dbconnection.php';

        if(isset($_POST['selectStore'])) {
        $id = $_POST['id'];

        $stmt = $mysqli->prepare("UPDATE stores SET records = records + 1 WHERE id = ?");

        $stmt->bind_param('i', $id);

        $stmt->execute();

        $stmt->close();

        $mysqli->close();   
        if($stmt) {
            echo "Updated Succesfull";
        } else {
            echo "Failed: " .  $stmt->error;
          }
        }
    ?>

访问getdata.php

<?php
include 'dbconnection.php';
if(isset($_POST['post_id'])) {
    $id = $_POST['post_id'];
    $sql = "SELECT id, store, results FROM stores WHERE id = ".$id;
    $res = $mysqli->query($sql);
    if($res){
        $data = $res->fetch_assoc(); 

        echo json_encode($data);
     }else{
        echo "no results: <br>";
    echo $sql;
    }
}
?>

selectshuffle.php

 <?php
      include 'dbconnection.php';
      $sql = "SELECT id, store, results FROM stores WHERE 1=1 ORDER BY RAND ( ) LIMIT 3";

      $res = $mysqli->query($sql);

    if ($res->num_rows > 0) {
        while($row = $res->fetch_assoc()) {
            echo "Id: " . $row["id"]. "<br>" .
                 "Store: " . $row["store"]. "<br>" .
                 "Result: " . $row["results"]. "<br><br>".
                 '<div class="btn btn-warning btn-open-modal" data-id="'.$row["id"].'">See Details '.'</div><br><br>';              
        }
    } else {
    echo "There is no results";
    }
?>
<div class="modal fade" id="editBox" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal">&times;</button>
                <h4 class="modal-title"><center>Get Heading</center></h4>
            </div>
            <div class="modal-body">
                <div class="form-data"></div>
                <p>Get Description</p>
            </div>

            <div class="modal-footer msg">
              <form action="updaterecords.php" method="post">
                <input type="hidden" value="333" name="id" />
                <button type="submit" name="selectStore" >Select</button>
                <button type="button" data-dismiss="modal">Close</button>
              </form>
            </div>
        </div>
    </div>
</div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script>

$(document).ready(function() {
  $(".btn-open-modal").click(function() {
    var id = $(this).data("id");
    $.ajax({
      type: 'post',
      url: 'getdata.php',
      data: {
        post_id: id
      }, 
      success: function(data) {
        console.log(data);
        var jdata = JSON.parse(data);
        if (jdata) {
          console.log("is json");
          $("#editBox").modal().show();
          $("#editBox .modal-title").html(jdata.headline);
          $("#editBox .modal-body").html("Store: " + jdata.store + "<br><br>Result: " + jdata.results); //  + " " + $query $query => query

        } else {
          console.log("not valid json: " + data);
        }
      }
    });
  });
});
</script>

Answer 1

将您的身份input设为ID，这将用于设置从getdata.php

返回的ID

<form action="page.php" method="post">
    <input type="hidden" id="store-id" value="" name="id" />
    <button type="submit" name="selectStore" >Select</button>
    <button type="button" data-dismiss="modal">Close</button>
</form>

然后在你的ajax调用中设置输入的值。

$(".btn-open-modal").click(function() {
    var id = $(this).data("id");
    $.ajax({
        type: 'post',
        url: 'getdata.php',
        data: {
            post_id: id
        },
        success: function(data) {
            console.log(data);
            var jdata = JSON.parse(data);
            if (jdata) {
                $("#editBox").modal().show();
                $('#store-id').val(jdata.id);  // set the value from the returned data
                $("#editBox .modal-title").html(jdata.headline);
                $("#editBox .modal-body").html("Store: " + jdata.store + "<br><br>Result: " + jdata.results); //  + " " + $query $query => query

            } else {
                console.log("not valid json: " + data);
            }
        }
    });
});

Answer 2

您将$ id作为int传递。从POST获取值时，它将返回为字符串。

替换：

$stmt->bind_param('i', $id);

与

$stmt->bind_param('s', $id);

或

您可以将字符串转换为int并将其作为整数传递。

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2 个答案: