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Description

Remove term(s) associated with a given object.

Usage

$bool|WP_Error = wp_remove_object_terms( $object_id, $terms, $taxonomy );

Parameters

$object_id

( int ) required – The ID of the object from which the terms will be removed.

$terms

( string|int|array ) required – The slug(s) or ID(s) of the term(s) to remove.

$taxonomy

( array|string ) required – Taxonomy name.

Returns

bool|WP_Error True on success, false or WP_Error on failure.

Source

File name: wordpress/wp-includes/taxonomy.php
Lines:

function wp_remove_object_terms( $object_id, $terms, $taxonomy ) {
  global $wpdb;

  $object_id = (int) $object_id;

  if ( ! taxonomy_exists( $taxonomy ) ) {
    return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) );
  }

  if ( ! is_array( $terms ) ) {
    $terms = array( $terms );
  }

  $tt_ids = array();

  foreach ( (array) $terms as $term ) {
    if ( '' === trim( $term ) ) {
      continue;
    }

    $term_info = term_exists( $term, $taxonomy );
    if ( ! $term_info ) {
      // Skip if a non-existent term ID is passed.
      if ( is_int( $term ) ) {
        continue;
      }
    }

    if ( is_wp_error( $term_info ) ) {
      return $term_info;
    }

    $tt_ids[] = $term_info['term_taxonomy_id'];
  }

  if ( $tt_ids ) {
    $in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'";

    
/**
 * Fires immediately before an object-term relationship is deleted.
 *
 * @since 2.9.0
 * @since 4.7.0 Added the `$taxonomy` parameter.
 *
 * @param int   $object_id Object ID.
 * @param array $tt_ids    An array of term taxonomy IDs.
 * @param string $taxonomy  Taxonomy slug.
 */
    do_action( 'delete_term_relationships', $object_id, $tt_ids, $taxonomy );

    $deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) );

    wp_cache_delete( $object_id, $taxonomy . '_relationships' );
    wp_cache_delete( 'last_changed', 'terms' );

    
/**
 * Fires immediately after an object-term relationship is deleted.
 *
 * @since 2.9.0
 * @since 4.7.0 Added the `$taxonomy` parameter.
 *
 * @param int    $object_id Object ID.
 * @param array  $tt_ids    An array of term taxonomy IDs.
 * @param string $taxonomy  Taxonomy slug.
 */
    do_action( 'deleted_term_relationships', $object_id, $tt_ids, $taxonomy );

    wp_update_term_count( $tt_ids, $taxonomy );

    return (bool) $deleted;
  }

  return false;
}
 

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