Edit File by line

<?php

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/**

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* WordPress Importer class for managing the import process of a WXR file

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* @package WordPress

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* @subpackage Importer

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/**

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* WordPress importer class.

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class WP_Import extends WP_Importer {

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var $max_wxr_version = 1.2; // max. supported WXR version

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var $id; // WXR attachment ID

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// information to import from WXR file

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var $version;

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var $authors = array();

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var $posts = array();

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var $terms = array();

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var $categories = array();

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var $tags = array();

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var $base_url = '';

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// mappings from old information to new

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var $processed_authors = array();

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var $author_mapping = array();

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var $processed_terms = array();

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var $processed_posts = array();

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var $post_orphans = array();

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var $processed_menu_items = array();

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var $menu_item_orphans = array();

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var $missing_menu_items = array();

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var $fetch_attachments = false;

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var $url_remap = array();

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var $featured_images = array();

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/**

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* Registered callback function for the WordPress Importer

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* Manages the three separate stages of the WXR import process

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function dispatch() {

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$this->header();

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$step = empty( $_GET['step'] ) ? 0 : (int) $_GET['step'];

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switch ( $step ) {

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case 0:

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$this->greet();

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break;

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case 1:

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check_admin_referer( 'import-upload' );

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if ( $this->handle_upload() ) {

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$this->import_options();

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}

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break;

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case 2:

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check_admin_referer( 'import-wordpress' );

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$this->fetch_attachments = ( ! empty( $_POST['fetch_attachments'] ) && $this->allow_fetch_attachments() );

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$this->id = (int) $_POST['import_id'];

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$file = get_attached_file( $this->id );

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set_time_limit( 0 );

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$this->import( $file );

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break;

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}

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$this->footer();

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}

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/**

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* The main controller for the actual import stage.

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* @param string $file Path to the WXR file for importing

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function import( $file ) {

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add_filter( 'import_post_meta_key', array( $this, 'is_valid_meta_key' ) );

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add_filter( 'http_request_timeout', array( &$this, 'bump_request_timeout' ) );

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$this->import_start( $file );

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$this->get_author_mapping();

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wp_suspend_cache_invalidation( true );

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$this->process_categories();

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$this->process_tags();

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$this->process_terms();

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$this->process_posts();

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wp_suspend_cache_invalidation( false );

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// update incorrect/missing information in the DB

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$this->backfill_parents();

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$this->backfill_attachment_urls();

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$this->remap_featured_images();

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$this->import_end();

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}

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/**

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* Parses the WXR file and prepares us for the task of processing parsed data

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* @param string $file Path to the WXR file for importing

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function import_start( $file ) {

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if ( ! is_file( $file ) ) {

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echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';

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echo __( 'The file does not exist, please try again.', 'wordpress-importer' ) . '</p>';

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$this->footer();

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die();

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}

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$import_data = $this->parse( $file );

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if ( is_wp_error( $import_data ) ) {

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echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';

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echo esc_html( $import_data->get_error_message() ) . '</p>';

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$this->footer();

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die();

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}

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$this->version = $import_data['version'];

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$this->get_authors_from_import( $import_data );

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$this->posts = $import_data['posts'];

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$this->terms = $import_data['terms'];

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$this->categories = $import_data['categories'];

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$this->tags = $import_data['tags'];

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$this->base_url = esc_url( $import_data['base_url'] );

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wp_defer_term_counting( true );

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wp_defer_comment_counting( true );

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do_action( 'import_start' );

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}

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/**

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* Performs post-import cleanup of files and the cache

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function import_end() {

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wp_import_cleanup( $this->id );

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wp_cache_flush();

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foreach ( get_taxonomies() as $tax ) {

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delete_option( "{$tax}_children" );

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_get_term_hierarchy( $tax );

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}

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wp_defer_term_counting( false );

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wp_defer_comment_counting( false );

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echo '<p>' . __( 'All done.', 'wordpress-importer' ) . ' <a href="' . admin_url() . '">' . __( 'Have fun!', 'wordpress-importer' ) . '</a>' . '</p>';

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echo '<p>' . __( 'Remember to update the passwords and roles of imported users.', 'wordpress-importer' ) . '</p>';

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do_action( 'import_end' );

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}

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/**

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* Handles the WXR upload and initial parsing of the file to prepare for

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* displaying author import options

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* @return bool False if error uploading or invalid file, true otherwise

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function handle_upload() {

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$file = wp_import_handle_upload();

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if ( isset( $file['error'] ) ) {

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echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';

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echo esc_html( $file['error'] ) . '</p>';

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return false;

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} elseif ( ! file_exists( $file['file'] ) ) {

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echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';

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printf( __( 'The export file could not be found at <code>%s</code>. It is likely that this was caused by a permissions problem.', 'wordpress-importer' ), esc_html( $file['file'] ) );

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echo '</p>';

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return false;

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}

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$this->id = (int) $file['id'];

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$import_data = $this->parse( $file['file'] );

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if ( is_wp_error( $import_data ) ) {

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echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';

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echo esc_html( $import_data->get_error_message() ) . '</p>';

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return false;

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}

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$this->version = $import_data['version'];

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if ( $this->version > $this->max_wxr_version ) {

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echo '<div class="error"><p><strong>';

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printf( __( 'This WXR file (version %s) may not be supported by this version of the importer. Please consider updating.', 'wordpress-importer' ), esc_html( $import_data['version'] ) );

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echo '</strong></p></div>';

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}

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$this->get_authors_from_import( $import_data );

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return true;

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}

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/**

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* Retrieve authors from parsed WXR data

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* Uses the provided author information from WXR 1.1 files

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* or extracts info from each post for WXR 1.0 files

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* @param array $import_data Data returned by a WXR parser

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function get_authors_from_import( $import_data ) {

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if ( ! empty( $import_data['authors'] ) ) {

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$this->authors = $import_data['authors'];

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// no author information, grab it from the posts

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} else {

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foreach ( $import_data['posts'] as $post ) {

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$login = sanitize_user( $post['post_author'], true );

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if ( empty( $login ) ) {

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printf( __( 'Failed to import author %s. Their posts will be attributed to the current user.', 'wordpress-importer' ), esc_html( $post['post_author'] ) );

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echo '<br />';

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continue;

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}

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if ( ! isset( $this->authors[ $login ] ) ) {

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$this->authors[ $login ] = array(

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'author_login' => $login,

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'author_display_name' => $post['post_author'],

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);

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}

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}

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}

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}

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/**

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* Display pre-import options, author importing/mapping and option to

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* fetch attachments

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function import_options() {

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$j = 0;

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// phpcs:disable Generic.WhiteSpace.ScopeIndent.Incorrect

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<form action="<?php echo admin_url( 'admin.php?import=wordpress&step=2' ); ?>" method="post">

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<?php wp_nonce_field( 'import-wordpress' ); ?>

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<?php if ( ! empty( $this->authors ) ) : ?>

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<?php if ( $this->allow_create_users() ) : ?>

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<?php endif; ?>

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<?php foreach ( $this->authors as $author ) : ?>

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<li><?php $this->author_select( $j++, $author ); ?></li>

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<?php endforeach; ?>

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</ol>

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<?php endif; ?>

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<?php if ( $this->allow_fetch_attachments() ) : ?>

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<p>

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</p>

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<?php endif; ?>

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</form>

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<?php

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// phpcs:enable Generic.WhiteSpace.ScopeIndent.Incorrect

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}

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/**

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* Display import options for an individual author. That is, either create

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* a new user based on import info or map to an existing user

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* @param int $n Index for each author in the form

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* @param array $author Author information, e.g. login, display name, email

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function author_select( $n, $author ) {

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_e( 'Import author:', 'wordpress-importer' );

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echo ' <strong>' . esc_html( $author['author_display_name'] );

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if ( '1.0' != $this->version ) {

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echo ' (' . esc_html( $author['author_login'] ) . ')';

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}

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echo '</strong><br />';

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if ( '1.0' != $this->version ) {

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echo '<div style="margin-left:18px">';

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}

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$create_users = $this->allow_create_users();

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if ( $create_users ) {

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echo '<label for="user_new_' . $n . '">';

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if ( '1.0' != $this->version ) {

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_e( 'or create new user with login name:', 'wordpress-importer' );

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$value = '';

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} else {

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_e( 'as a new user:', 'wordpress-importer' );

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$value = esc_attr( sanitize_user( $author['author_login'], true ) );

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}

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echo '</label>';

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echo ' <input type="text" id="user_new_' . $n . '" name="user_new[' . $n . ']" value="' . $value . '" /><br />';

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}

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echo '<label for="imported_authors_' . $n . '">';

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if ( ! $create_users && '1.0' == $this->version ) {

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_e( 'assign posts to an existing user:', 'wordpress-importer' );

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} else {

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_e( 'or assign posts to an existing user:', 'wordpress-importer' );

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}

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echo '</label>';

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echo ' ' . wp_dropdown_users(

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array(

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'name' => "user_map[$n]",

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'id' => 'imported_authors_' . $n,

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'multi' => true,

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'show_option_all' => __( '- Select -', 'wordpress-importer' ),

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'show' => 'display_name_with_login',

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'echo' => 0,

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)

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);

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echo '<input type="hidden" name="imported_authors[' . $n . ']" value="' . esc_attr( $author['author_login'] ) . '" />';

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if ( '1.0' != $this->version ) {

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echo '</div>';

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}

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}

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/**

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* Map old author logins to local user IDs based on decisions made

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* in import options form. Can map to an existing user, create a new user

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* or falls back to the current user in case of error with either of the previous

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function get_author_mapping() {

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if ( ! isset( $_POST['imported_authors'] ) ) {

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return;

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}

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$create_users = $this->allow_create_users();

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foreach ( (array) $_POST['imported_authors'] as $i => $old_login ) {

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// Multisite adds strtolower to sanitize_user. Need to sanitize here to stop breakage in process_posts.

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$santized_old_login = sanitize_user( $old_login, true );

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$old_id = isset( $this->authors[ $old_login ]['author_id'] ) ? intval( $this->authors[ $old_login ]['author_id'] ) : false;

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if ( ! empty( $_POST['user_map'][ $i ] ) ) {

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$user = get_userdata( intval( $_POST['user_map'][ $i ] ) );

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if ( isset( $user->ID ) ) {

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if ( $old_id ) {

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$this->processed_authors[ $old_id ] = $user->ID;

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}

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$this->author_mapping[ $santized_old_login ] = $user->ID;

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}

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} elseif ( $create_users ) {

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if ( ! empty( $_POST['user_new'][ $i ] ) ) {

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$user_id = wp_create_user( $_POST['user_new'][ $i ], wp_generate_password() );

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} elseif ( '1.0' != $this->version ) {

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$user_data = array(

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'user_login' => $old_login,

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'user_pass' => wp_generate_password(),

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'user_email' => isset( $this->authors[ $old_login ]['author_email'] ) ? $this->authors[ $old_login ]['author_email'] : '',

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'display_name' => $this->authors[ $old_login ]['author_display_name'],

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'first_name' => isset( $this->authors[ $old_login ]['author_first_name'] ) ? $this->authors[ $old_login ]['author_first_name'] : '',

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'last_name' => isset( $this->authors[ $old_login ]['author_last_name'] ) ? $this->authors[ $old_login ]['author_last_name'] : '',

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);

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$user_id = wp_insert_user( $user_data );

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}

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if ( ! is_wp_error( $user_id ) ) {

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if ( $old_id ) {

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$this->processed_authors[ $old_id ] = $user_id;

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}

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$this->author_mapping[ $santized_old_login ] = $user_id;

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} else {

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printf( __( 'Failed to create new user for %s. Their posts will be attributed to the current user.', 'wordpress-importer' ), esc_html( $this->authors[ $old_login ]['author_display_name'] ) );

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if ( defined( 'IMPORT_DEBUG' ) && IMPORT_DEBUG ) {

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echo ' ' . $user_id->get_error_message();

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}

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echo '<br />';

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}

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}

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// failsafe: if the user_id was invalid, default to the current user

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if ( ! isset( $this->author_mapping[ $santized_old_login ] ) ) {

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if ( $old_id ) {

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$this->processed_authors[ $old_id ] = (int) get_current_user_id();

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}

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$this->author_mapping[ $santized_old_login ] = (int) get_current_user_id();

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}

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}

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}

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/**

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* Create new categories based on import information

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* Doesn't create a new category if its slug already exists

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function process_categories() {

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$this->categories = apply_filters( 'wp_import_categories', $this->categories );

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if ( empty( $this->categories ) ) {

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return;

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}

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foreach ( $this->categories as $cat ) {

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// if the category already exists leave it alone

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$term_id = term_exists( $cat['category_nicename'], 'category' );

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if ( $term_id ) {

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if ( is_array( $term_id ) ) {

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$term_id = $term_id['term_id'];

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}

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if ( isset( $cat['term_id'] ) ) {

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$this->processed_terms[ intval( $cat['term_id'] ) ] = (int) $term_id;

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}

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continue;

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}

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$parent = empty( $cat['category_parent'] ) ? 0 : category_exists( $cat['category_parent'] );

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$description = isset( $cat['category_description'] ) ? $cat['category_description'] : '';

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$data = array(

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'category_nicename' => $cat['category_nicename'],

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'category_parent' => $parent,

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'cat_name' => wp_slash( $cat['cat_name'] ),

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'category_description' => wp_slash( $description ),

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);

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$id = wp_insert_category( $data, true );

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if ( ! is_wp_error( $id ) && $id > 0 ) {

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if ( isset( $cat['term_id'] ) ) {

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$this->processed_terms[ intval( $cat['term_id'] ) ] = $id;

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}

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} else {

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printf( __( 'Failed to import category %s', 'wordpress-importer' ), esc_html( $cat['category_nicename'] ) );

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if ( defined( 'IMPORT_DEBUG' ) && IMPORT_DEBUG ) {

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echo ': ' . $id->get_error_message();

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}

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echo '<br />';

[435] Fix | Delete

continue;

[436] Fix | Delete

}

[437] Fix | Delete

[438] Fix | Delete

$this->process_termmeta( $cat, $id );

[439] Fix | Delete

}

[440] Fix | Delete

[441] Fix | Delete

unset( $this->categories );

[442] Fix | Delete

}

[443] Fix | Delete

[444] Fix | Delete

/**

[445] Fix | Delete

* Create new post tags based on import information

[446] Fix | Delete

[447] Fix | Delete

* Doesn't create a tag if its slug already exists

[448] Fix | Delete

[449] Fix | Delete

function process_tags() {

[450] Fix | Delete

$this->tags = apply_filters( 'wp_import_tags', $this->tags );

[451] Fix | Delete

[452] Fix | Delete

if ( empty( $this->tags ) ) {

[453] Fix | Delete

return;

[454] Fix | Delete

}

[455] Fix | Delete

[456] Fix | Delete

foreach ( $this->tags as $tag ) {

[457] Fix | Delete

// if the tag already exists leave it alone

[458] Fix | Delete

$term_id = term_exists( $tag['tag_slug'], 'post_tag' );

[459] Fix | Delete

if ( $term_id ) {

[460] Fix | Delete

if ( is_array( $term_id ) ) {

[461] Fix | Delete

$term_id = $term_id['term_id'];

[462] Fix | Delete

}

[463] Fix | Delete

if ( isset( $tag['term_id'] ) ) {

[464] Fix | Delete

$this->processed_terms[ intval( $tag['term_id'] ) ] = (int) $term_id;

[465] Fix | Delete

}

[466] Fix | Delete

continue;

[467] Fix | Delete

}

[468] Fix | Delete

[469] Fix | Delete

$description = isset( $tag['tag_description'] ) ? $tag['tag_description'] : '';

[470] Fix | Delete

$args = array(

[471] Fix | Delete

'slug' => $tag['tag_slug'],

[472] Fix | Delete

'description' => wp_slash( $description ),

[473] Fix | Delete

);

[474] Fix | Delete

[475] Fix | Delete

$id = wp_insert_term( wp_slash( $tag['tag_name'] ), 'post_tag', $args );

[476] Fix | Delete

if ( ! is_wp_error( $id ) ) {

[477] Fix | Delete

if ( isset( $tag['term_id'] ) ) {

[478] Fix | Delete

$this->processed_terms[ intval( $tag['term_id'] ) ] = $id['term_id'];

[479] Fix | Delete

}

[480] Fix | Delete

} else {

[481] Fix | Delete

printf( __( 'Failed to import post tag %s', 'wordpress-importer' ), esc_html( $tag['tag_name'] ) );

[482] Fix | Delete

if ( defined( 'IMPORT_DEBUG' ) && IMPORT_DEBUG ) {

[483] Fix | Delete

echo ': ' . $id->get_error_message();

[484] Fix | Delete

}

[485] Fix | Delete

echo '<br />';

[486] Fix | Delete

continue;

[487] Fix | Delete

}

[488] Fix | Delete

[489] Fix | Delete

$this->process_termmeta( $tag, $id['term_id'] );

[490] Fix | Delete

}

[491] Fix | Delete

[492] Fix | Delete

unset( $this->tags );

[493] Fix | Delete

}

[494] Fix | Delete

[495] Fix | Delete

/**

[496] Fix | Delete

* Create new terms based on import information

[497] Fix | Delete

[498] Fix | Delete

* Doesn't create a term its slug already exists

[499] Fix | Delete

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