Template redirect

template-redirect.php

<?php
public static function template_redirect() {
	$current_user_id = get_current_user_id();

	if ( is_search() && is_user_logged_in() ) {

		$search_query			 = get_search_query();
		$last_search_queries	 = get_user_meta( $current_user_id, 'last_search_queries', true );
		$last_search_queries[]	 = $search_query;
		$last_search_queries	 = apply_filters( 'search_queries', $last_search_queries );
		$update_user_meta		 = update_user_meta( $current_user_id, 'last_search_queries', $last_search_queries, false );
	} if ( is_singular( 'item' ) && is_user_logged_in() ) {
		$the_id		 = intval( get_the_ID() );
		$user_meta	 = get_user_meta( $current_user_id, 'last_visited_items', true );
		if ( is_array( $user_meta ) ) {
			$user_meta [] = $the_id;
		} else {
			$user_meta = array( $the_id );
		}
		$user_meta = array_unique( $user_meta );
		update_user_meta( $current_user_id, 'last_visited_items', $user_meta, false );

		$the_terms					 = get_the_terms( get_the_ID(), 'category' );
		$user_last_categories_meta	 = get_user_meta( $current_user_id, 'user_last_categories', true );

		$the_terms_ids = array();
		foreach ( $the_terms as $term ) {
			$the_terms_ids[] = $term->term_id;
		}

		if ( is_array( $user_last_categories_meta ) ) {
			$user_last_categories_meta = array_merge( $user_last_categories_meta, $the_terms_ids );
		} else {
			$user_last_categories_meta = $the_terms_ids;
		}
		$user_last_categories_meta = array_unique( $user_last_categories_meta );
		update_user_meta( $current_user_id, 'user_last_categories', $user_last_categories_meta, false );
	}
}