I am very new to ajax with wordpress . Here i am getting a selected option value in var test using bellow function when i alert it its showing a right value.

This var test value i have to send using ajax and i want GET this value in PHP variable.

So what i required to call ajax and get script variable value of var test in php in plugin file where i have both bellow function and select box.

JQuery Funtion.


var test= time_slot.value;


Select Box

<select name="time_slot" id="time_slot" class="time_slot">
<option value="">Choose a Time</option>
<option value="1:00 - 3:00">01:00 AM-03:00 AM</option>
<option value="3:00 - 5:00">03:00 AM-05:00 AM</option>

5 Answers 5


Use the built-in wordpress Ajax actions:

Your jquery will look like this:

$('#ajax_form').bind('submit', function() {
    var form = $('#ajax_form');
    var data = form.serialize();
    data.action = 'MyPlugin_GetVars'
    $.post('/wp-admin/admin-ajax.php', data, function(response) {
return false; 

Your plugin code something like:

add_action("wp_ajax_MyPlugin_GetVars", "MyPlugin_GetVars");
add_action("wp_ajax_nopriv_MyPlugin_GetVars", "MyPlugin_GetVars");

function MyPlugin_GetVars(){
    global $wpdb;
    // use $wpdb to do your inserting

    //Do your ajax stuff here
    // You could do include('/wp-content/plugins/test/getvars.php') but you should
    // just avoid that and move the code into this function

For more info please visit AJAX in Plugins

  • can you tell me the file structure according to question code Jul 19, 2014 at 5:59

please look at below, it may help to you. Here it is your PHP code.


function ajax_enqueuescripts() {
    wp_enqueue_script('ajaxloadpost', plugins_url().'/your-plugin-name/js/my-ajax.js', array('jquery'));
    wp_localize_script( 'ajaxloadpost', 'ajax_postajax', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) );

add_action('wp_enqueue_scripts', ajax_enqueuescripts);

add_action('wp_ajax_nopriv_ajax_ajaxhandler', 'my_action_callback' );
add_action('wp_ajax_ajax_ajaxhandler', 'my_action_callback' );

function my_action_callback(){  

And here it is your JS code. You need to create new JS file and put below code in your new JS file.


    var test= time_slot.value;

        type: 'GET',
        url: ajax_postajax.ajaxurl,
        data: {
            action: 'ajax_ajaxhandler',
            test : test   
        success: function(data) {
        error: function(XMLHttpRequest, textStatus, errorThrown) {

    return false;

For more details, you can check here

  • what to do with this /your-plugin-name/js/my-ajax.js can elaborate it Jul 19, 2014 at 6:17
  • You need to put your js code in my-ajax.js(file name of js). So "/your-plugin-name/js/my-ajax.js" will be your path to JS file. Jul 19, 2014 at 6:37
  • booking.php is file name where i am getting Jqery value which i have to send in ajax call so where i will put this function ajax_enqueuescripts() { and can create the ja file under the booking.php file and can i put file name of that js file in Jul 19, 2014 at 6:44
  • getting error arse error: syntax error, unexpected T_STRING, expecting T_FUNCTION on this hook line add_action('wp_enqueue_scripts', ajax_enqueuescripts); Jul 19, 2014 at 6:53
  • i have done all thing you said in answer but getting above error Jul 19, 2014 at 6:56

Add this in Your Plugin php page

 add_action("wp_ajax_ajax_plugin_call", "ajax_plugin_call_callback"); 
 add_action("wp_ajax_nopriv_ajax_plugin_call", "ajax_plugin_call_callback");

Ajax Function in Php Page

function ajax_plugin_call_callback{
   global $wpdb;
   print_r($_POST) ; 
   // write your Php Code


Your Javascript Code like this

  jQuery('#formID').bind('submit', function() { // Form submit Button
      var form_value =  jQuery('#formID'); 
      var form_data = form_value.serialize(); //Serialize the Form 
      form_data['action']='ajax_plugin_call'; // Action 
     jQuery.post('<?php  echo admin_url('admin-ajax.php'); ?>',form_data,function(response){

         // Here is the Ajax Response


Please Check this, it will provide you help in WordPress Ajax call in plugin.

  • Thanks for your answer, but please elaborate. Your answer is considered code dumping.
    – engelen
    Jul 19, 2014 at 10:54
  • @engelen hey i have used ajax like var data = { current_datedddd: sdfdsfsdf, post_id: "'.$duplicate_of.'", action: "call_addon_price1" '.$attribute_fields_str.' }; alert(sdfdsfsdf); its posting time value but in function action: "call_addon_price1" i am not able to store in variblle using POST Jul 19, 2014 at 11:27
  • can you tell me what is "$attribute_fields_str"? Jul 19, 2014 at 11:31
  • @engelen you can check my ajax call test.skovian.com/thefoodieclub.com/dine/dine/… Jul 19, 2014 at 11:34
  • Please Try this add_action("wp_ajax_ajax_call_addon_price1", "call_addon_price1_callback"); add_action("wp_ajax_nopriv_call_addon_price1", "call_addon_price1_callback"); function call_addon_price1_callback(){ try this in your plugin print_r($_POST); die; } Jul 19, 2014 at 11:45

I have call ajax using bellow code its working good. Here i am sending the variable time to this page using post $.post("'. plugins_url().'/woocommerce-booking/gettime.php",

var time=0;
                            $.post("'. plugins_url().'/woocommerce-booking/gettime.php",
                                 {name: time},

my gettime.php file will be look like bellow and getting response from my ajax call.

<?php session_start();
    echo $name= $_POST["name"];
    file_put_contents("name.txt", $name)


You must first enqueue the script and define the URL. Then you have to create a function for your AJAX callback and add a WordPress action that calls it. Here is a video where I explain it, hope it helps. :)


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