刷新DIV标记的内容，其中包括一个PHP函数调用 - Refreshing the contents of a DIV tag, which includes a PHP function call

Refreshing the contents of a DIV tag, which includes a PHP function call

问题的核心是，我试图在不重新加载整个页面的情况下使用HTML下拉菜单的值来调用php函数。考虑到PHP是一种服务器端语言，我引入了JQuery来处理onChange事件，希望只重新加载页面的一部分。我想调用的PHP函数(即wp_cart-button_for_product(打印出一个添加到购物车按钮，但与添加到购物中心按钮相关的变量最终取决于下拉菜单。我想要重新加载的div标记(即按钮重新加载(在当前页面上，但URL会根据产品的不同而变化。我已经尝试过load和html方法，但运气不佳。

<script type = "text/javascript">
  function productchange() 
  {
      var currentrow = $('#productcategory1').val();
      $("#jsvar").val(currentrow);
      $.ajax({
        type: "GET",
        url: "http://www.example.com/wp-content/themes/themeX/storevar.php",
        data: {'jsvar': currentrow},
        complete: function(){
              $('#button-reload').load("http://www.example.com/wp-content/themes/themeX/printbutton.php #button-reload > *");
      //      $('#button-reload').html($('#button-reload',data).html);
      //      $('#button-reload').load(location.href "#button-reload > *");
            }});      
      return false;
  }
  </script>
<div id = "button-reload">
      <?php echo print_wp_cart_button_for_product($products[$_SESSION['currentrow']]["Product"], $products[$_SESSION['currentrow']]["Price"]); ?>
  </div>
  <form method="get" action="http://www.example.com/wp-content/themes/themeX/storevar.php">
      <input type="hidden" name="jsvar" id="jsvar" value="" />
  </form>

Storevar.php

<?php
    session_start();
    $currentrow = $_GET['jsvar'];
    echo "Current Row = $currentrow";
    $_SESSION['currentrow'] = $currentrow;
    echo "Session Currentrow =".$_SESSION['currentrow'];
?>

打印按钮.php

<div id="button-reload">
    <?php echo print_wp_cart_button_for_product($products[$_SESSION['currentrow']]["Product"], $products[$_SESSION['currentrow']]["Price"]); ?>
</div>

function productchange() 
{
var currentrow = $('#productcategory1').val();
$('#button-reload').load("http://www.example.com/wp-content/themes/themeX/printbutton.php", {jsvar: currentrow});
}

应该足够了。

您正在执行一个ajax请求，然后在成功回调中调用load。查看jquery文档http://api.jquery.com/load/

EDIT您的printbutton.php中缺少"session_start((；"。您还可以在其中添加存储代码，因此只需要进行一次ajax调用。

打印按钮.php

<?php
    session_start();
    $currentrow = $_GET['jsvar'];
    echo "Current Row = $currentrow";
    $_SESSION['currentrow'] = $currentrow;
?>
<div id="button-reload">
    <?php echo print_wp_cart_button_for_product($products[$_SESSION['currentrow']]["Product"], $products[$_SESSION['currentrow']]["Price"]); ?>
</div>

经过数小时的实验：

 <script type = "text/javascript">
 function productchange() 
  {
      var currentrow = $('#productcategory1').val();
      alert(currentrow);
      $("#jsvar").val(currentrow);
      $.ajax({
         type: "GET",
         url: "http://example.com/wp-content/themes/themeX/storevar.php",
         data: {'jsvar': currentrow},
         success: function(response){
              alert(response);
              var pathname = window.location.href;
              alert(pathname);
              $('#button-reload').load(pathname + " #button-reload", function(responseTxt, statusTxt, xhr){
              if(statusTxt=="success")
                alert("Content loaded successfully!");
                if(statusTxt=="error")
                  alert("Error: "+xhr.status+": "+xhr.statusTxt);
                  });
  return false;
  }
  </script>