WordPress メディアファイル一括登録

WP-CLI で提供されていても良いと思いますが、（多分）ないのでスクリプトを用意しました。

<?php
require_once __DIR__ . '/../../../wp-load.php';
require_once __DIR__ . '/../../../wp-admin/includes/media.php';
require_once __DIR__ . '/../../../wp-admin/includes/image.php';
require_once __DIR__ . '/../../../wp-admin/includes/file.php';

$source_directory      = $argv[1];
$destination_directory = $argv[2];

foreach (glob($source_directory . '*') as $file_name) {
    if ( ! is_file($file_name)) {
        continue;
    }

    $destination_file_name = $destination_directory . basename($file_name);
    rename($file_name, $destination_file_name);

    $file_type_map = wp_check_filetype(basename($destination_file_name), null);
    $attachment    = [
        'guid'           => $destination_file_name,
        'post_mime_type' => $file_type_map['type'],
        'post_title'     => preg_replace('/\.[^.]+$/', '', basename($destination_file_name)),
        'post_content'   => '',
        'post_status'    => 'inherit'
    ];
    $attachment_id = wp_insert_attachment($attachment, $destination_file_name, 0);
    wp_update_attachment_metadata($attachment_id, wp_generate_attachment_metadata($attachment_id, $destination_file_name));

    printf("%d : %s\n", $attachment_id, $destination_file_name);
}