A script to backup all your liked images and metadata from Tumblr.

backup-tumblr-likes.php

<?php

$date = date('Y-m-d');
if ($argv[1]) {
    $date =  $argv[1];
}

// Get all posts for this montn posts
$biggest_timestamp = strtotime($date) - 60;
$selected_month = date('Ym', strtotime($date));

$index    = 0;
$has_more = true;
$posts    = [];
while($has_more) {

    $new_posts = get_more_posts($biggest_timestamp);
    $new_posts = remove_posts_not_in_current_month($new_posts, $selected_month);
    if (count($new_posts) == 0) {
        $has_more = false;
    }

    $biggest_timestamp = array_reduce($new_posts, function($t, $post) { return $post->liked_timestamp > $t ? $post->liked_timestamp : $t; }, 0);

    $last_post_month = date('Ym', $biggest_timestamp);
    log_message("  Last post so far ... "  . date('d/m/Y', $biggest_timestamp), 'info');
    if ($last_post_month != $selected_month) {
        $has_more = false;
    }

    $posts = array_merge($posts, $new_posts);
}

log_message("Processing " . count($posts) . " for $selected_month ...");
usort( $posts, function($post1, $post2) { return $post1->liked_timestamp - $post2->liked_timestamp; } );
$posts = array_reverse($posts);

foreach($posts as $post) {
    $post_month = date('Ym', $post->liked_timestamp);
    if ($post_month != $selected_month) {
        // finished processing month
        break;
    }

    $index++;
    $dir = date('Y/m', $post->liked_timestamp);
    process_post($post, $dir, $index);
}

function remove_posts_not_in_current_month($posts, $selected_month) {
    $new_posts = [];
    foreach($posts as $post) {
        if (date('Ym', $post->liked_timestamp) == $selected_month) {
            $new_posts[] = $post;
        }
    }
    return $new_posts;
}

function process_post($post, $dir, $index) {
    // Only process photo and text posts
    if ($post->type != 'photo' && $post->type != 'text') {
        log_message(" Skipping post $post->post_url of type $post->type");
        return;
    }

    if  (!file_exists($dir)) {
        mkdir($dir,  0755, true);
        mkdir($dir . '/.meta',  0755, true);
    }

    $index = sprintf("%010d", $post->liked_timestamp);

    $meta_filename = $dir . '/.meta/' . $index . '.json';
    if (file_exists($meta_filename)) {
        log_message("Skipping $dir/$index.json....", 'info');
        return;
    }

    log_message("Processing $dir/$index.json....");

    file_put_contents($meta_filename, json_encode($post));

    $image_urls = [];
    if ($post->type == 'photo') {
        foreach($post->photos as $photo) {
            $image_urls[] = $photo->original_size->url;
        }

        // Process caption. Some posts have images in caption
        $num_images_in_caption = preg_match_all('/< *img[^>]*src *= *["\']?([^"\']*)/i', $post->caption, $matches);
        for($i = 0; $i < $num_images_in_caption; $i++) {
            $image_urls[] = $matches[1][$i];
        }
    }
    else if ($post->type == 'text') {
        $num_images = preg_match_all('/< *img[^>]*src *= *["\']?([^"\']*)/i', $post->body, $matches);
        for($i = 0; $i < $num_images; $i++) {
            $image_urls[] = $matches[1][$i];
        }
    }

    $photo_index = 1;
    foreach($image_urls as $photo_url) {
        $photo_url_path = parse_url($photo_url, PHP_URL_PATH);
        $extension = pathinfo($photo_url_path, PATHINFO_EXTENSION);
        file_put_contents($dir . '/' . $index . '-' . $post->blog_name . '-' . $photo_index . '.' . $extension, file_get_contents($photo_url));
        $photo_index++;
    }

}

function get_more_posts($timestamp) {

    $api_key = '[API KEY GOES HERE]';
    $blog    = 'hypro';
    $limit   = 50;

    $url =  sprintf(
        'https://api.tumblr.com/v2/blog/%s/likes?api_key=%s&limit=%s&after=%s',
        $blog,
        $api_key,
        $limit,
        $timestamp);

    log_message("Getting posts later than " . date('d/m/Y', $timestamp));

    $response = json_decode(file_get_contents($url));

    if ($response->meta->status != 200) {
        print_r($respose->meta);
        return [];
    }


    return $response->response->liked_posts;
}

function log_message($msg, $status = 'info') {
    if ($status == 'info') {
        print( "\033[37m ✔ INFO \033[32m$msg\033[37m\n" );
    } else if ($status == 'error') {
        print( "\033[31m ✖ \e[4mERROR\e[0m\033[0;37m  $msg\033[37m\n" );
    } else {
        print( "\033[37m\033[1;32m$msg\033[0;37m\n" );
    }
    return;
}