A standalone, API-based Wallabag JSON importer

wallabag-import.php

<?php

// Digest exported wallabag JSON and re-import it,
// since the built-in importer is broken.

// CONFIGURATION //

// Secrets file, for your API keys
define('WALLABAG_SECRETS', 'wallabag-secrets.php');

// Path to exported JSON file
define('WALLABAG_JSON_FILE', 'wallabag.json');

// Path to debug log file
define('WALLABAG_LOGFILE', 'wallabag.log');

// SETUP //

// Wallabag instance information
require_once(WALLABAG_SECRETS);
if(
    !isset($wallabag_domain) ||
    !isset($wallabag_client_id) ||
    !isset($wallabag_client_secret) ||
    !isset($wallabag_username) ||
    !isset($wallabag_password)
) {
    print('Missing necessary client credential(s) or configuration.'.PHP_EOL);
    exit(1);
}

$data = json_decode(file_get_contents(WALLABAG_JSON_FILE));
if(!$data) {
    print('Unable to parse JSON from specified file.'.PHP_EOL);
    exit(1);
}

$ch = curl_init();
$token_post_data = [
    'grant_type' => 'password',
    'client_id' => $wallabag_client_id,
    'client_secret' => $wallabag_client_secret,
    'username' => $wallabag_username,
    'password' => $wallabag_password
];
$opts = [
    CURLOPT_URL => 'https://'.$wallabag_domain.'/oauth/v2/token',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => $token_post_data
];
curl_setopt_array($ch, $opts);
$token_data = json_decode(curl_exec($ch));
$wallabag_access_token = $token_data->access_token;
curl_close($ch);

// IMPORT //

foreach($data as $datum) {

    // Translate export fields to API parameters
    $import_datum = [
        'url' => $datum->url,
        'title' => $datum->title,
        'tags' => $datum->tags ?? [],
        'archive' => $datum->is_archived ?? 0,
        'starred' => $datum->is_starred ?? 0,
        'content' => $datum->content ?? '',
        'language' => $datum->language ?? 'en',
        'preview_picture' => $datum->preview_picture ?? '',
        'published_at' => $datum->published_at ?? 0,
        'public' => $datum->is_public,
        'origin_url' => $datum->origin_url ?? $datum->url
    ];

    print('Importing "'.$import_datum['title'].'" ('.$import_datum['url'].')'.PHP_EOL);

    $ch = curl_init();
    $opts = [
        CURLOPT_URL => 'https://'.$wallabag_domain.'/api/entries.json',
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => http_build_query($import_datum),
        CURLOPT_HTTPHEADER => array('Authorization: Bearer '.$wallabag_access_token)
    ];
    curl_setopt_array($ch, $opts);
    $response = curl_exec($ch);

    // Debug logging
    file_put_contents(WALLABAG_LOGFILE, $response, FILE_APPEND);

    curl_close($ch);


}

Thank you, matt, that worked for me!