get_categories returns only after page reload all cats

[christian_gnoth]

I am using in a plugin the following script:

  //  check if default cat exists
  if ( !get_cat_ID('ImportFit') ) 
  {
    wp_create_category( 'ImportFit' );
  }

  $categories = get_categories(array('hide_empty' => false));

with a var_dump on $categories I can see, that the created category is returned only after one page reload. in the category view in the backend the created cat is visible.

[dd32]

This condition is only hit if 2 conditions are met:

• The category list has been queried in the pageload already
• The get_categories() call is made within 1 second of the category being created. (ie. time(creation) == time(2ndquery))

This is not unique to Categories, It applies to all terms.

The cause is related to the 'last_changed' cache key used in the Taxonomy API it appears to me.

[christian_gnoth]

still with version 3.2.1 I have the same problem. During plugin activation action I have the following code:

  //  check if default cat exists
  if ( !get_cat_ID('Support Tickets') ) 
  {
    $cat_id = wp_create_category( 'Support Tickets' );
    $cat_id = wp_create_category( 'New Tickets', $cat_id );
  }

In the posts->catgories section I get only the "Support Tickets" category, the child category is not listed.

[scribu]

This is just another symptom of #14485

[SergeyBiryukov]

Restoring the initial reported version.