fix.php

<?php

error_reporting(E_ALL);
ini_set('display_errors', 1);

use Mediawiki\Api\MediawikiApi;
use Mediawiki\Api\ApiUser;
use Mediawiki\DataModel\Revision;
use Mediawiki\DataModel\EditInfo;
use Wikibase\Api\WikibaseFactory;
use Wikibase\DataModel\ItemContent;
use Wikibase\DataModel\Snak\PropertyValueSnak;
use Wikibase\DataModel\Snak\PropertyNoValueSnak;
use Wikibase\DataModel\Entity\PropertyId;
use Wikibase\DataModel\Entity\ItemId;
use Wikibase\DataModel\Entity\EntityIdValue;
use DataValues\StringValue;

// Load all of the things
require_once( __DIR__ . '/vendor/autoload.php' );
require_once( __DIR__ . '/config.inc.php' );

date_default_timezone_set('UTC');

// Use the Wikidata API and Login
$api = new MediawikiApi('https://www.wikidata.org/w/api.php');
$api->login(new ApiUser($username, $password));

// Set the bot flag for the edits
$editInfo = new EditInfo('', false, true);

// Instantiate WikibaseFactory
$services = new WikibaseFactory(
	$api, new DataValues\Deserializers\DataValueDeserializer(), new DataValues\Serializers\DataValueSerializer()
);

// Get specific services
$getter = $services->newRevisionGetter();
$remover = $services->newStatementRemover();
$creator = $services->newStatementCreator();

// Put list of items here
$itemList = array(
    'Q58984'
);

foreach ($itemList as $item) {
    $revision = $getter->getFromId($item);
    $itemData = $revision->getContent()->getData();

    // Get all the country claims for this item
    $statementList = $itemData->getStatements();
    $countryStatementList = $statementList->getByPropertyId(PropertyId::newFromNumber(17));

    // Remove existing country statements
    foreach ($countryStatementList as $countryStatement) {
	$remover->remove($countryStatement, $editinfo);
	sleep(2);
    }

    // Create new statement: country:novalue
    $creator->create(
	    new PropertyNoValueSnak(
	    PropertyId::newFromNumber(17)
	    ), $item, $editInfo
    );
    sleep(10);

    // Create new statement: located in the administrative territorial entity:Antarctic Treaty area
    $creator->create(
	    new PropertyValueSnak(
	    PropertyId::newFromNumber(131), new EntityIdValue(new ItemId('Q21590062'))
	    ), $item, $editInfo
    );
    echo $item . "\n";
    sleep(10);
}