dongxianrang9269 2016-03-27 19:17
浏览 191
已采纳

获取Alert的值并在php中将其设置为变量

I want to make my alert value as a variable in php. This is my code

<html>    
<body>


    <form action="" method="post">

    <select name="kat" id="kat" >
        <option></option>
        <option>UNANG TAE</option>
        <option>PANGALAWANG TAE</option>

    </select>

        <input type="text" value="" name="baliw">

    </form>


<script src="js/jquery.js"></script>

<script>

$('#kat').on('change', function () {

<?php

/*
mysql_connect('localhost','root','');
mysql_select_db('perens');
mysql_query(" INSERT INTO table (sample) VALUES ('".$alert_value."') ");
*/
    ?>

alert(this.value);


});


</script>

    </body>
</html>

There's a comment inside my PHP where I want to make the alert value as a variable but I don't know how.

  • 写回答

3条回答 默认 最新

  • duan198299 2016-03-27 19:52
    关注

    You can't do that directly.

    The javascript event listener that raises the alert message is executed by the web browser (client side) and the php is executed in the server side before than page is loaded by the web browser (server side).

    What you can do is to send the alert message to a PHP script using an AJAX request.

    Example:

    $('#kat').on('change', function() {

  $.ajax({
    url: "myscript.php",
    type: "post",
    data: {
      message: this.value
    }
  });

  alert(this.value);

});
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Type whatever you want here:
<input type="text" id="kat" />

    Now you can capture the messages from a php script like the following one:

    <?php

// myscript.php

$alert_message = $_POST['message'];

// !!! Importat, sanitize the input in order to avoid a classic
// SQLInjection
// $alert_message =  mySanitizationFunction($_POST['message']);

mysql_connect('localhost','root','');
mysql_select_db('perens');
mysql_query(" INSERT INTO table (sample) VALUES ('".$alert_value."') ");

?>

    Remember that it is important to sanitize the input in order to avoid a SQL Injection, I recommend you to use a database abstration layer like PDO or an ORM that can facilitate the input sanitization.

    </div>
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(2条)

报告相同问题？

悬赏问题

  • ¥15 matlab有限元法求解梁带有若干弹簧质量系统的固有频率
  • ¥15 找一个网络防御专家，外包的
  • ¥100 能不能让两张不同的图片md5值一样，（有尝）
  • ¥15 informer代码训练自己的数据集，改参数怎么改
  • ¥15 请看一下，学校实验要求，我需要具体代码
  • ¥50 pc微信3.6.0.18不能登陆 有偿解决问题
  • ¥20 MATLAB绘制两隐函数曲面的交线
  • ¥15 求TYPCE母转母转接头24PIN线路板图
  • ¥100 国外网络搭建，有偿交流
  • ¥15 高价求中通快递查询接口