The delete_term_taxonomy WordPress action is used to execute custom code just before a term taxonomy ID is deleted.
Usage
add_action('delete_term_taxonomy', 'your_custom_function');
function your_custom_function($tt_id) {
// your custom code here
}
Parameters
$tt_id(int): The term taxonomy ID that is going to be deleted.
More information
See WordPress Developer Resources: delete_term_taxonomy
Examples
Log taxonomy deletion
Log the deletion of term taxonomy IDs to a custom file.
add_action('delete_term_taxonomy', 'log_taxonomy_deletion');
function log_taxonomy_deletion($tt_id) {
$log_message = "Term taxonomy ID {$tt_id} was deleted.";
error_log($log_message, 3, '/path/to/your/log-file.log');
}
Send email notification
Send an email notification to the administrator when a term taxonomy ID is deleted.
add_action('delete_term_taxonomy', 'send_email_on_taxonomy_deletion');
function send_email_on_taxonomy_deletion($tt_id) {
$admin_email = get_option('admin_email');
$subject = "Term Taxonomy Deleted";
$message = "Term taxonomy ID {$tt_id} was deleted.";
wp_mail($admin_email, $subject, $message);
}
Remove associated metadata
Remove all associated metadata when a term taxonomy ID is deleted.
add_action('delete_term_taxonomy', 'remove_associated_metadata');
function remove_associated_metadata($tt_id) {
delete_metadata('term', $tt_id);
}
Update counter
Update a custom counter when a term taxonomy ID is deleted.
add_action('delete_term_taxonomy', 'update_custom_counter');
function update_custom_counter($tt_id) {
$counter = get_option('my_taxonomy_delete_counter');
$counter++;
update_option('my_taxonomy_delete_counter', $counter);
}
Add a custom log entry
Add a custom log entry in the database when a term taxonomy ID is deleted.
add_action('delete_term_taxonomy', 'add_custom_log_entry');
function add_custom_log_entry($tt_id) {
global $wpdb;
$table_name = $wpdb->prefix . "custom_log";
$wpdb->insert($table_name, array('taxonomy_id' => $tt_id, 'action' => 'deleted'));
}