I am building a WordPress website that uses a custom AJAX filter that is linked to my Custom categories.

This is my function ajax-filter.php:

   function filter() {

 $uid = get_current_user_id();
 $paged = ( get_query_var( 'page' ) ) ? get_query_var( 'page' ) : 1;
 $customer_account  = get_field('customer_account', 'user_'.$uid );

   $args = array(
     'post_type' => 'cpt',
     'posts_per_page' => -1,
       'orderby' => 'date',
     'tax_query' => array(
       'relation' => 'AND',
         'taxonomy' => 'customer',
         'field'    => 'term_id',
         'terms'    => $customer_account,

       $the_query = new WP_Query($args);
       $results = array();

               if (!empty($the_query->posts))
                   foreach ($the_query->posts as $post)
                       $id = $post->ID;
                       array_push($results, array(
                           'id' => $id,
                           'title' => get_field('e_detail_title', $id),
                           'tax' => get_the_terms( $post->ID, 'type', $id ),


          $someJSON = json_encode($results);
          // Convert JSON string to Object
          $someObject = json_decode($someJSON);

          foreach($someObject as $key => $value) {
                 echo $value->title;

      add_action( 'wp_ajax_filter', 'filter' );
      add_action( 'wp_ajax_nopriv_filter', 'filter' );

My question is:

How can i use my data from tax to term-id in the way that i use in my ajax-filter.php? to use my data ($value->title)

    [0] => Array
          [title] => title
          [tax] => Array
                    [0] => WP_Term Object
                            [term_id] => 54


  • I can't tell what you're trying to do. Your ajax-filter.php code doesn't make a lot of sense. You're looping through $the_query, which hasn't been made in your function or retrieved from anywhere. Then you're pushing values into an array, encoding it into JSON, immediately decoding it, then looping through and echoing a property that doesn't exist. Not to mention the values you're putting in are term objects into a tax field. Also filter() is a dangerously generic name for a function (and doesn't appear to describe what you're doing). What are you actually trying to accomplish? Sep 12, 2017 at 11:12
  • @JacobPeattie i updated the code. i forgot to place that line in.
    – Dionoh
    Sep 12, 2017 at 11:20
  • That's great but you're still going to have to explain what you're trying to do. Sep 12, 2017 at 11:23
  • @JacobPeattie When i use my data as $value->title; i get my title. but what i want is from within my tax array to show the id of my tax. it would be something like this $value->tax->term_id;
    – Dionoh
    Sep 12, 2017 at 11:33

1 Answer 1


You are trying to access an object inside an array. To retrieve the data from term_id, you can use:


Notice that the first 3 steps are arrays, and then there is a WP_Object, which has an array inside.

Breaking Down the Code

$value                          - returns the entire array
$value[0]                       - returns the first element of the array
$value[0]['tax']                - returns the `tax` element and all of its contents
$value[0]['tax'][0]             - returns the first element of `tax`
$value[0]['tax'][0]->term_id    - points to the term id inside the above


You don't need to use json_encode or json_decode. Simply use a foreach to output the content:

foreach( $results as $key => $value) {
    echo $value['tax']->term_id;

You might also want to use $value['tax'][0]->term_id if there are multiple terms inside the tax.

  • When i put this code in, nothing happens.
    – Dionoh
    Sep 12, 2017 at 12:13
  • echo $value[0]['tax'][0]->term_id;
    – Dionoh
    Sep 12, 2017 at 12:13
  • @Dionoh Does $value[0]['tax'][0]['term_id'] work? When you encode and decode from json (why are you doing this) you're turning everything into an array. Sep 12, 2017 at 12:18
  • Not working. What would you do instead of encode and decode?
    – Dionoh
    Sep 12, 2017 at 12:19
  • I used echo '<pre>'; print_r($value); echo '</pre>';
    – Dionoh
    Sep 12, 2017 at 12:22

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