在更改下拉列表showld上调用php函数 [英] on Change of dropdown list showld call the php function

问题描述

在更改下拉列表时，应调用一个php函数.

On change of the dropdown list, A php function should called.

在PHP函数中，我将进行一些计算.稍后，我需要设置文本框的值，否则PHP函数应该返回一个值，该值必须在javascript中捕获并将该值设置为文本框控件.

Inside the PHP function I will do some calculation. Later I need to set the value of a text box or else that PHP function should return a value that value shoul be catch in the javascript and set that valu to the textbox control.

我的html函数是

<select name="sltLeaveType" id="sltLeaveType" class="formSelect" onchange="TotalCountsOfPL(this.value)">
        <?php
      <option></option>
      <option></option>
</select>

然后在PHP函数中将其放置在D:/Project/EmployeeDetails/EmpLeave.php

And in PHP function is placed in D:/Project/EmployeeDetails/EmpLeave.php

class clsGetTotalPL 
{
    function GetTotalPL($EmployeeId)
    {       
        $query = "select count(leave_request_id) from hs_hr_leave_requests where leave_type_id='LTY002' AND employee_id=".$EmployeeId.";";
    return $query;
}

所以现在[请向我提供JQuery函数来调用此Php函数 可以在下拉列表上的每次更改时调用GetTotalPL()函数.

So now please [prvide me the JQuery function to call this Php function to get call the GetTotalPL() function on every change on the the dropdownlist.

推荐答案

您不能从js或html调用php函数，但是可以通过ajax调用php函数来执行此操作，然后在其中执行计算，然后将结果值返回给js，这样您就可以将js转换为html ...

You can't call a php function from js or html, but you can do that by ajax call to a php function where you can perform your calculation and then return the result value to js, so then you can do by js to html...

更新:

<select name="employee" id="employee" onchange="getIPL(this.value);">
   <option value="">Select Employee</option>
</select>    

function getIPL(id)
    {
            $.ajax({
                       type: "GET",
                       url: "EmpLeave.php",
                       data: "emp_Id =" + id,
                       success: function(result){
                         $("#somewhere").html(result);
                       }
                     });
    };


 // Empleave.php file....
  if(isset($_GET['emp_Id'])){
     GetTotalPL($_GET['emp_Id']);
 }

 function GetTotalPL($id){
  // do your calculation...
}

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