import-public-entities.php

<?php
ini_set('display_errors', 1);

$_SERVER["HTTP_HOST"] = "pleio.dev";
$_SERVER["HTTPS"] = false;

require_once(dirname(__FILE__) . "/engine/start.php");

$user = get_user_by_username('admin');
login($user);

$file = fopen('export.json', 'r');
while (($line = fgets($file)) !== false) {
    $json = json_decode($line);

    if ($json->subtype == 'file') {
        $object = new FilePluginFile();
    } else {
        $object = new ElggObject();
        $object->subtype = get_subtype_id('object', $json['subtype']);
    }

    $object->title = $json->title;
    $object->description = $json->description;
    $object->access_id = $json->access_id;

    if ($json->subtype == 'file') {
        $object->setFilename($json->filename);
        $object->originalfilename = $json->filename;
        $object->setMimeType(mime_content_type($json->filename));
        $object->simpletype = file_get_simple_type($mime_type);

        // make sure filepath exists
        $object->open("write");
        $object->close();

        copy($json->filename, $object->getFilenameOnFilestore());
    }

    $object->save();
}

fclose($file);