title: wordpress how to retrieve a single custom field value from a custom field array
body: <p>I have a custom fields that is actually an array.</p>
  
  <p>I would like to get one single field value from this array.</p>
  
  <p>When I do:
      $meta = get_post_meta( get_the_ID(), 'my_fields_array');
  and then
      var_dump($meta); // debugging 
  I can see the array</p>
  
  <p>How can I get one single value from this array?</p>