diff --git a/src/composer.json b/src/composer.json
index 2fd67db..8d49b9c 100644
--- a/src/composer.json
+++ b/src/composer.json
@@ -3,6 +3,7 @@
   "minimum-stability": "beta",
   "require": {
     "php": ">=8.2",
+    "bit-badger/inspired-by-fsharp": "@dev",
     "bit-badger/pdo-document": "^1",
     "ext-curl": "*",
     "ext-dom": "*",
diff --git a/src/composer.lock b/src/composer.lock
index fabfe15..4ac4472 100644
--- a/src/composer.lock
+++ b/src/composer.lock
@@ -4,8 +4,53 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d5b7f01ef79cdce09364eed3dca3281d",
+    "content-hash": "2caacda2b3694b265db846cd539e1ca3",
     "packages": [
+        {
+            "name": "bit-badger/inspired-by-fsharp",
+            "version": "dev-main",
+            "source": {
+                "type": "git",
+                "url": "https://git.bitbadger.solutions/bit-badger/inspired-by-fsharp",
+                "reference": "193147cfb32f423dceb1619f091445efa1a2f13e"
+            },
+            "require": {
+                "php": "^8"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^11"
+            },
+            "default-branch": true,
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "BitBadger\\InspiredByFSharp\\": "./src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Daniel J. Summers",
+                    "email": "daniel@bitbadger.solutions",
+                    "homepage": "https://bitbadger.solutions",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP utility classes whose functionality is inspired by their F# counterparts",
+            "keywords": [
+                "option",
+                "result"
+            ],
+            "support": {
+                "email": "daniel@bitbadger.solutions",
+                "rss": "https://git.bitbadger.solutions/bit-badger/inspired-by-fsharp.rss",
+                "source": "https://git.bitbadger.solutions/bit-badger/inspired-by-fsharp"
+            },
+            "time": "2024-07-27T02:55:02+00:00"
+        },
         {
             "name": "bit-badger/pdo-document",
             "version": "v1.0.0-beta7",
@@ -252,7 +297,9 @@
     "packages-dev": [],
     "aliases": [],
     "minimum-stability": "beta",
-    "stability-flags": [],
+    "stability-flags": {
+        "bit-badger/inspired-by-fsharp": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/src/lib/Feed.php b/src/lib/Feed.php
index a9913b8..fa51ef4 100644
--- a/src/lib/Feed.php
+++ b/src/lib/Feed.php
@@ -8,12 +8,11 @@ declare(strict_types=1);
 
 namespace FeedReaderCentral;
 
+use BitBadger\InspiredByFSharp\{Option, Result};
 use BitBadger\PDODocument\{
     Configuration, Custom, Document, DocumentException, DocumentList, Exists, Field, Find, Parameters, Patch, Query
 };
 use DateTimeInterface;
-use GrahamCampbell\ResultType\{Error, Result, Success};
-use PhpOption\Option;
 
 /**
  * An RSS or Atom feed
@@ -114,15 +113,14 @@ class Feed
                     } else {
                         Item::add($feedId, $item);
                     }
-                    return Success::create(true);
+                    return Result::OK(true);
                 } catch (DocumentException $ex) {
-                    return Error::create("$ex");
+                    return Result::Error("$ex");
                 }
             }, array_filter($parsed->items,
                 fn(ParsedItem $it) => date_create_immutable($it->updatedOn ?? $it->publishedOn) >= $lastChecked));
-        $errors = array_map(fn(Result $it) => $it->error()->get(),
-            array_filter($results, fn(Result $it) => $it->error()->isDefined()));
-        return sizeof($errors) > 0 ? Error::create(implode("\n", $errors)) : Success::create(true);
+        $errors = array_map(fn(Result $it) => $it->getError(), array_filter($results, Result::isError(...)));
+        return sizeof($errors) > 0 ? Result::Error(implode("\n", $errors)) : Result::OK(true);
     }
 
     /**
@@ -161,13 +159,13 @@ class Feed
                     SQL;
                 break;
             default:
-                return Error::create('Unrecognized purge type ' . PURGE_TYPE);
+                return Result::Error('Unrecognized purge type ' . PURGE_TYPE);
         }
         try {
             Custom::nonQuery($sql, Parameters::addFields($fields, []));
-            return Success::create(true);
+            return Result::OK(true);
         } catch (DocumentException $ex) {
-            return Error::create("$ex");
+            return Result::Error("$ex");
         }
     }
 
@@ -182,16 +180,16 @@ class Feed
     public static function refreshFeed(int $feedId, string $url): Result
     {
         $tryRetrieve = ParsedFeed::retrieve($url);
-        if ($tryRetrieve->error()->isDefined()) return $tryRetrieve->error()->get();
-        $feed = $tryRetrieve->success()->get();
+        if (Result::isError($tryRetrieve)) return $tryRetrieve;
+        $feed = $tryRetrieve->getOK();
 
         try {
             $feedDoc = Find::byId(Table::Feed, $feedId, self::class);
-            if ($feedDoc->isEmpty()) return Error::create('Could not derive date last checked for feed');
+            if ($feedDoc->isEmpty()) return Result::Error('Could not derive date last checked for feed');
             $lastChecked = date_create_immutable($feedDoc->get()->checked_on ?? WWW_EPOCH);
 
             $itemUpdate = self::updateItems($feedId, $feed, $lastChecked);
-            if ($itemUpdate->error()->isDefined()) return $itemUpdate->error()->get();
+            if (Result::isError($itemUpdate)) return $itemUpdate;
 
             $patch = [
                 'title'      => $feed->title,
@@ -201,10 +199,10 @@ class Feed
             if ($url !== $feed->url) $patch['url'] = $feed->url;
             Patch::byId(Table::Feed, $feedId, $patch);
         } catch (DocumentException $ex) {
-            return Error::create("$ex");
+            return Result::Error("$ex");
         }
 
-        return PURGE_TYPE === self::PurgeNone ? Success::create(true) : self::purgeItems($feedId);
+        return PURGE_TYPE === self::PurgeNone ? Result::OK(true) : self::purgeItems($feedId);
     }
 
     /**
@@ -216,25 +214,25 @@ class Feed
     public static function add(string $url): Result
     {
         $tryRetrieve = ParsedFeed::retrieve($url);
-        if ($tryRetrieve->error()->isDefined()) return $tryRetrieve->error()->get();
-        $feed = $tryRetrieve->success()->get();
+        if (Result::isError($tryRetrieve)) return $tryRetrieve;
+        $feed = $tryRetrieve->getOK();
 
         try {
             $fields = [Field::EQ('user_id', $_SESSION[Key::UserId]), Field::EQ('url', $feed->url)];
             if (Exists::byFields(Table::Feed, $fields)) {
-                return Error::create("Already subscribed to feed $feed->url");
+                return Result::Error("Already subscribed to feed $feed->url");
             }
 
             Document::insert(Table::Feed, self::fromParsed($feed));
 
             $tryDoc = Find::firstByFields(Table::Feed, $fields, self::class);
-            if ($tryDoc->isEmpty()) return Error::create('Could not retrieve inserted feed');
+            if ($tryDoc->isEmpty()) return Result::Error('Could not retrieve inserted feed');
             $doc = $tryDoc->get();
 
             $result = self::updateItems($doc->id, $feed, date_create_immutable(WWW_EPOCH));
-            return $result->error()->isDefined() ? $result->error()->get() : Success::create($doc->id);
+            return Result::isError($result) ? $result : Result::OK($doc->id);
         } catch (DocumentException $ex) {
-            return Error::create("$ex");
+            return Result::Error("$ex");
         }
     }
 
@@ -253,7 +251,7 @@ class Feed
                 ['url' => $url]);
             return self::refreshFeed($existing->id, $url);
         } catch (DocumentException $ex) {
-            return Error::create("$ex");
+            return Result::Error("$ex");
         }
     }
 
@@ -278,31 +276,31 @@ class Feed
      */
     public static function refreshAll(): Result
     {
-        try {
-            $feeds = self::retrieveAll($_SESSION[Key::UserId]);
+        $errors = [];
 
-            $errors = [];
-            foreach ($feeds->items() as $feed) {
-                $result = self::refreshFeed($feed->id, $feed->url);
-                if ($result->error()->isDefined()) $errors[] = $result->error()->get();
-            }
+        try {
+            self::retrieveAll($_SESSION[Key::UserId])->iter(function (Feed $feed) use (&$errors) {
+                Result::mapError(function (string $err) use (&$errors) { $errors[] = $err; },
+                    self::refreshFeed($feed->id, $feed->url));
+            });
         } catch (DocumentException $ex) {
-            return Error::create("$ex");
+            return Result::Error("$ex");
         }
 
-        return empty($errors) ? Success::create(true) : Error::create(implode("\n", $errors));
+        return empty($errors) ? Result::OK(true) : Result::Error(implode("\n", $errors));
     }
 
     /**
      * Retrieve a feed by its ID for the current user
      *
      * @param int $feedId The ID of the feed to retrieve
-     * @return Option<static> A `Some` value with the data for the feed if found, `None` otherwise
+     * @return Option<Feed> A `Some` value with the data for the feed if found, `None` otherwise
      * @throws DocumentException If any is encountered
      */
     public static function retrieveById(int $feedId): Option
     {
-        return Find::byId(Table::Feed, $feedId, static::class)
-            ->filter(fn($it) => $it->user_id === $_SESSION[Key::UserId]);
+        return to_option(
+            Find::byId(Table::Feed, $feedId, static::class)
+                ->filter(fn($it) => $it->user_id === $_SESSION[Key::UserId]));
     }
 }
diff --git a/src/lib/ItemWithFeed.php b/src/lib/ItemWithFeed.php
index 4ce96a2..0404c81 100644
--- a/src/lib/ItemWithFeed.php
+++ b/src/lib/ItemWithFeed.php
@@ -8,9 +8,9 @@ declare(strict_types=1);
 
 namespace FeedReaderCentral;
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{Configuration, Custom, DocumentException, Field, Parameters, Query};
 use BitBadger\PDODocument\Mapper\{DocumentMapper, ExistsMapper};
-use PhpOption\Option;
 
 /**
  * A combined item and feed (used for lists)
@@ -68,7 +68,8 @@ class ItemWithFeed extends Item
     public static function retrieveById(int $id): Option
     {
         $fields = self::idAndUserFields($id);
-        return Custom::single(self::SELECT_WITH_FEED . ' WHERE ' . Query::whereByFields($fields),
-            Parameters::addFields($fields, []), new DocumentMapper(self::class));
+        return to_option(
+            Custom::single(self::SELECT_WITH_FEED . ' WHERE ' . Query::whereByFields($fields),
+                Parameters::addFields($fields, []), new DocumentMapper(self::class)));
     }
 }
diff --git a/src/lib/ParsedFeed.php b/src/lib/ParsedFeed.php
index 8b15f4d..738fafc 100644
--- a/src/lib/ParsedFeed.php
+++ b/src/lib/ParsedFeed.php
@@ -8,13 +8,11 @@ declare(strict_types=1);
 
 namespace FeedReaderCentral;
 
+use BitBadger\InspiredByFSharp\Result;
 use DOMDocument;
 use DOMElement;
 use DOMException;
 use DOMNode;
-use GrahamCampbell\ResultType\Error;
-use GrahamCampbell\ResultType\Result;
-use GrahamCampbell\ResultType\Success;
 
 /**
  * A feed, as parsed from the Atom or RSS XML
@@ -73,9 +71,9 @@ readonly class ParsedFeed
         try {
             $feed = new DOMDocument();
             $feed->loadXML($content);
-            return Success::create($feed);
+            return Result::OK($feed);
         } catch (DOMException $ex) {
-            return Error::create($ex->getMessage());
+            return Result::Error($ex->getMessage());
         } finally {
             restore_error_handler();
         }
@@ -106,7 +104,7 @@ readonly class ParsedFeed
         $channel = $xml->getElementsByTagName('channel')->item(0);
         if (!($channel instanceof DOMElement)) {
             $type = $channel?->nodeType ?? -1;
-            return Error::create("Channel element not found ($type)");
+            return Result::Error("Channel element not found ($type)");
         }
 
         // The Atom namespace provides a lastBuildDate, which contains the last time an item in the feed was updated; if
@@ -117,7 +115,7 @@ readonly class ParsedFeed
             }
         }
 
-        return Success::create(new self(
+        return Result::OK(new self(
             url:       $url,
             title:     self::rssValue($channel, 'title'),
             updatedOn: Data::formatDate($updatedOn),
@@ -172,7 +170,7 @@ readonly class ParsedFeed
         $root = $xml->getElementsByTagNameNS(self::ATOM_NS, 'feed')->item(0);
         if (($updatedOn = self::atomValue($root, 'updated')) == 'pubDate not found') $updatedOn = null;
 
-        return Success::create(new self(
+        return Result::OK(new self(
             url:       $url,
             title:     self::atomValue($root, 'title'),
             updatedOn: Data::formatDate($updatedOn),
@@ -197,9 +195,9 @@ readonly class ParsedFeed
             curl_setopt($docReq, CURLOPT_USERAGENT, self::USER_AGENT);
 
             $error = curl_error($docReq);
-            if ($error !== '') return Error::create($error);
+            if ($error !== '') return Result::Error($error);
 
-            return Success::create([
+            return Result::OK([
                 'content' => curl_exec($docReq),
                 'code'    => curl_getinfo($docReq, CURLINFO_RESPONSE_CODE),
                 'url'     => curl_getinfo($docReq, CURLINFO_EFFECTIVE_URL)
@@ -220,17 +218,17 @@ readonly class ParsedFeed
         $html = new DOMDocument();
         $html->loadHTML(substr($content, 0, strpos($content, '</head>') + 7));
         $headTags = $html->getElementsByTagName('head');
-        if ($headTags->length < 1) return Error::create('Cannot find feed at this URL');
+        if ($headTags->length < 1) return Result::Error('Cannot find feed at this URL');
         $head = $headTags->item(0);
         foreach ($head->getElementsByTagName('link') as $link) {
             if (self::attrValue($link, 'rel') === 'alternate') {
                 $type = self::attrValue($link, 'type');
                 if ($type === 'application/rss+xml' || $type === 'application/atom+xml') {
-                    return Success::create(self::attrValue($link, 'href'));
+                    return Result::OK(self::attrValue($link, 'href'));
                 }
             }
         }
-        return Error::create('Cannot find feed at this URL');
+        return Result::Error('Cannot find feed at this URL');
     }
 
     /**
@@ -242,18 +240,18 @@ readonly class ParsedFeed
     public static function retrieve(string $url): Result
     {
         $tryDoc = self::retrieveDocument($url);
+        if (Result::isError($tryDoc)) return $tryDoc;
 
-        if ($tryDoc->error()->isDefined()) return $tryDoc->error()->get();
-        $doc = $tryDoc->success()->get();
+        $doc = $tryDoc->getOK();
         if ($doc['code'] !== 200) {
-            return Error::create("Prospective feed URL $url returned HTTP Code {$doc['code']}: {$doc['content']}");
+            return Result::Error("Prospective feed URL $url returned HTTP Code {$doc['code']}: {$doc['content']}");
         }
 
         $start = strtolower(strlen($doc['content']) >= 9 ? substr($doc['content'], 0, 9) : $doc['content']);
         if ($start === '<!doctype' || str_starts_with($start, '<html')) {
             $derivedURL = self::deriveFeedFromHTML($doc['content']);
-            if ($derivedURL->error()->isDefined()) return $derivedURL->error()->get();
-            $feedURL = $derivedURL->success()->get();
+            if (Result::isError($derivedURL)) return $derivedURL;
+            $feedURL = $derivedURL->getOK();
             if (!str_starts_with($feedURL, 'http')) {
                 // Relative URL; feed should be retrieved in the context of the original URL
                 $original = parse_url($url);
@@ -261,17 +259,17 @@ readonly class ParsedFeed
                 $feedURL  = $original['scheme'] . '://' . $original['host'] . $port . $feedURL;
             }
             $tryDoc = self::retrieveDocument($feedURL);
-            if ($tryDoc->error()->isDefined()) return $tryDoc->error()->get();
-            $doc = $tryDoc->success()->get();
+            if (Result::isError($tryDoc)) return $tryDoc;
+            $doc = $tryDoc->getOK();
             if ($doc['code'] !== 200) {
-                return Error::create("Derived feed URL $url returned HTTP Code {$doc['code']}: {$doc['content']}");
+                return Result::Error("Derived feed URL $url returned HTTP Code {$doc['code']}: {$doc['content']}");
             }
         }
 
         $tryParse = self::parseFeed($doc['content']);
-        if ($tryParse->error()->isDefined()) return $tryParse->error()->get();
+        if (Result::isError($tryParse)) return $tryParse;
 
-        $parsed = $tryParse->success()->get();
+        $parsed = $tryParse->getOK();
         $extract = $parsed->getElementsByTagNameNS(self::ATOM_NS, 'feed')->length > 0
             ? self::fromAtom(...) : self::fromRSS(...);
         return $extract($parsed, $doc['url']);
diff --git a/src/lib/Security.php b/src/lib/Security.php
index 20ea88c..aa7df90 100644
--- a/src/lib/Security.php
+++ b/src/lib/Security.php
@@ -8,6 +8,7 @@ declare(strict_types=1);
 
 namespace FeedReaderCentral;
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{DocumentException, Field, Patch};
 
 /**
@@ -93,8 +94,7 @@ readonly class Security
             }
             $dbEmail = $email;
         }
-        $user = User::findByEmail($dbEmail);
-        if ($user->isDefined()) self::verifyPassword($user->get(), $password, $returnTo);
+        Option::iter(fn(User $it) => self::verifyPassword($it, $password, $returnTo), User::findByEmail($dbEmail));
         add_error('Invalid credentials; log on unsuccessful');
     }
 
@@ -119,7 +119,7 @@ readonly class Security
     private static function logOnSingleUser(): void
     {
         $user = User::findByEmail(self::SingleUserEmail);
-        if ($user->isEmpty()) {
+        if (Option::isNone($user)) {
             User::add(self::SingleUserEmail, self::SingleUserPassword);
             $user = User::findByEmail(self::SingleUserEmail);
         }
diff --git a/src/lib/User.php b/src/lib/User.php
index 85a12ce..bab1e24 100644
--- a/src/lib/User.php
+++ b/src/lib/User.php
@@ -8,9 +8,9 @@ declare(strict_types=1);
 
 namespace FeedReaderCentral;
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{Custom, Document, DocumentException, Field, Find, Parameters, Query};
 use BitBadger\PDODocument\Mapper\ExistsMapper;
-use PhpOption\Option;
 
 /**
  * A user of Feed Reader Central
@@ -35,7 +35,7 @@ class User
      */
     public static function findByEmail(string $email): Option
     {
-        return Find::firstByFields(Table::User, [Field::EQ('email', $email)], User::class);
+        return to_option(Find::firstByFields(Table::User, [Field::EQ('email', $email)], User::class));
     }
 
     /**
diff --git a/src/public/bookmark.php b/src/public/bookmark.php
index 41e99ea..3b0dfb7 100644
--- a/src/public/bookmark.php
+++ b/src/public/bookmark.php
@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{DocumentException, Patch};
 use FeedReaderCentral\{ItemWithFeed, Table};
 
@@ -18,22 +19,21 @@ include '../start.php';
 FeedReaderCentral\Security::verifyUser();
 
 $id   = key_exists('id', $_GET) ? (int)$_GET['id'] : -1;
-$item = ItemWithFeed::retrieveById($id)->getOrCall(not_found(...));
+$item = Option::getOrCall(not_found(...), ItemWithFeed::retrieveById($id));
 
 if (key_exists('action', $_GET)) {
-    $flag = match ($_GET['action']) {
-        'add'    => 1,
-        'remove' => 0,
-        default  => null
-    };
-    if (isset($flag)) {
+    Option::iter(function (int $flag) use ($id, &$item) {
         try {
             Patch::byId(Table::Item, $id, ['is_bookmarked' => $flag]);
             $item->is_bookmarked = $flag;
         } catch (DocumentException $ex) {
             add_error("$ex");
         }
-    }
+    }, match ($_GET['action']) {
+        'add'    => Option::Some(1),
+        'remove' => Option::Some(0),
+        default  => Option::None(),
+    });
 }
 
 $action = $item->isBookmarked() ? 'remove' : 'add';
diff --git a/src/public/feed/index.php b/src/public/feed/index.php
index 04bfc7b..9f5beae 100644
--- a/src/public/feed/index.php
+++ b/src/public/feed/index.php
@@ -10,9 +10,9 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\{Option, Result};
 use BitBadger\PDODocument\{Delete, DocumentException, Field};
 use FeedReaderCentral\{Feed, Security, Table};
-use GrahamCampbell\ResultType\Error;
 
 include '../../start.php';
 
@@ -23,7 +23,7 @@ $feedId = key_exists('id', $_GET) ? (int)$_GET['id'] : -1;
 switch ($_SERVER['REQUEST_METHOD']) {
     case 'DELETE':
         try {
-            $feed = Feed::retrieveById($feedId)->getOrCall(not_found(...));
+            $feed = Option::getOrCall(not_found(...), Feed::retrieveById($feedId));
             Delete::byFields(Table::Item, [Field::EQ('feed_id', $feed->id)]);
             Delete::byId(Table::Feed, $feed->id);
             add_info('Feed &ldquo;' . htmlentities($feed->title) . '&rdquo; deleted successfully');
@@ -40,15 +40,15 @@ switch ($_SERVER['REQUEST_METHOD']) {
             } else {
                 $feedId = (int)$_POST['id'];
                 $toEdit = Feed::retrieveById($feedId);
-                $result = $toEdit->isDefined()
+                $result = Option::isSome($toEdit)
                     ? Feed::update($toEdit->get(), $_POST['url'])
-                    : Error::create("Feed $feedId not found");
+                    : Result::Error("Feed $feedId not found");
             }
-            if ($result->success()->isDefined()) {
+            if (Result::isOK($result)) {
                 add_info('Feed saved successfully');
                 frc_redirect('/feeds');
             }
-            add_error($result->error()->get());
+            add_error($result->getError());
             $feedId = 'error';
         } catch (DocumentException $ex) {
             add_error("$ex");
@@ -63,7 +63,7 @@ if ($feedId == -1) {
     $title = 'Edit RSS Feed';
     $feed = $feedId == 'error'
         ? new Feed(id: (int)$_POST['id'], url: $_POST['url'] ?? '')
-        : Feed::retrieveById((int)$feedId)->getOrCall(not_found(...));
+        : Option::getOrCall(not_found(...), Feed::retrieveById((int)$feedId));
 }
 
 page_head($title); ?>
diff --git a/src/public/feed/items.php b/src/public/feed/items.php
index 317d837..6630cc4 100644
--- a/src/public/feed/items.php
+++ b/src/public/feed/items.php
@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Option;
 use FeedReaderCentral\{Feed, ItemList};
 
 include '../../start.php';
@@ -17,7 +18,7 @@ include '../../start.php';
 FeedReaderCentral\Security::verifyUser();
 
 $id   = key_exists('id', $_GET) ? (int)$_GET['id'] : -1;
-$feed = Feed::retrieveById($id)->getOrCall(not_found(...));
+$feed = Option::getOrCall(not_found(...), Feed::retrieveById($id));
 
 $list = match (true) {
     key_exists('unread',     $_GET) => ItemList::unreadForFeed($feed->id),
diff --git a/src/public/index.php b/src/public/index.php
index d398049..de2f8aa 100644
--- a/src/public/index.php
+++ b/src/public/index.php
@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Result;
 use FeedReaderCentral\{Feed, ItemList};
 
 include '../start.php';
@@ -18,16 +19,16 @@ FeedReaderCentral\Security::verifyUser();
 
 if (key_exists('refresh', $_GET)) {
     $refreshResult = Feed::refreshAll();
-    if ($refreshResult->success()->isDefined()) {
+    if (Result::isOK($refreshResult)) {
         add_info('All feeds refreshed successfully');
     } else {
-        add_error(nl2br($refreshResult->error()->get()));
+        add_error(nl2br($refreshResult->getError()));
     }
 }
 
 $list = match (true) {
     key_exists('bookmarked', $_GET) => ItemList::allBookmarked(),
-    default                         => ItemList::allUnread()
+    default                         => ItemList::allUnread(),
 };
 $title = "Your $list->itemType Items";
 
diff --git a/src/public/item.php b/src/public/item.php
index f937a8a..2521a86 100644
--- a/src/public/item.php
+++ b/src/public/item.php
@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{Delete, DocumentException, Patch};
 use FeedReaderCentral\{ItemWithFeed, Table};
 
@@ -49,7 +50,7 @@ switch ($_SERVER['REQUEST_METHOD']) {
         frc_redirect($from);
 }
 
-!$item = ItemWithFeed::retrieveById($id)->getOrCall(not_found(...));
+!$item = Option::getOrCall(not_found(...), ItemWithFeed::retrieveById($id));
 try {
     Patch::byId(Table::Item, $id, ['is_read' => 1]);
 } catch (DocumentException $ex) {
diff --git a/src/start.php b/src/start.php
index 54ea35b..e7db411 100644
--- a/src/start.php
+++ b/src/start.php
@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\Configuration;
 use FeedReaderCentral\{Key, Security, User};
 
@@ -186,3 +187,14 @@ function not_found(): never
     http_response_code(404);
     die('Not Found');
 }
+
+/**
+ * Transform a `PhpOption` into the option we use
+ *
+ * @param \PhpOption\Option $option The option to be transformed
+ * @return Option An option in the form Feed Reader Central uses
+ */
+function to_option(PhpOption\Option $option): Option
+{
+    return $option->isDefined() ? Option::Some($option->get()) : Option::None();
+}
diff --git a/src/util/refresh.php b/src/util/refresh.php
index 8719e04..2d7852c 100644
--- a/src/util/refresh.php
+++ b/src/util/refresh.php
@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Result;
 use BitBadger\PDODocument\{DocumentException, Find};
 use FeedReaderCentral\{Feed, Table, User};
 
@@ -51,9 +52,9 @@ function refresh_all(): void
                 $users[$userKey] = Find::byId(Table::User, $feed->user_id, User::class)
                     ->getOrElse(new User(email: 'user-not-found'));
             }
-            if ($result->error()->isDefined()) {
+            if (Result::isError($result)) {
                 printfn('ERR (%s) %s', $users[$userKey]->email, $feed->url);
-                printfn('         %s', $result->error()->get());
+                printfn('         %s', $result->getError());
             } else {
                 printfn('OK  (%s) %s', $users[$userKey]->email, $feed->url);
             }
diff --git a/src/util/user.php b/src/util/user.php
index 6fa0a3a..2985ed7 100644
--- a/src/util/user.php
+++ b/src/util/user.php
@@ -11,6 +11,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{Count, Custom, Delete, DocumentException, Field, Parameters, Patch, Query};
 use FeedReaderCentral\{Security, Table, User};
 
@@ -103,7 +104,7 @@ function add_user(): void
     try {
         // Ensure there is not already a user with this e-mail address
         $user = User::findByEmail($argv[2]);
-        if ($user->isDefined()) {
+        if (Option::isSome($user)) {
             printfn('A user with e-mail address "%s" already exists', $argv[2]);
             return;
         }
@@ -124,7 +125,7 @@ function add_user(): void
  */
 function display_user(string $email): string
 {
-    return $email == Security::SingleUserEmail ? 'single-user mode user' : "user \"$email\"";
+    return $email === Security::SingleUserEmail ? 'single-user mode user' : "user \"$email\"";
 }
 
 /**
@@ -137,7 +138,7 @@ function set_password(string $email, string $password): void
 
         // Ensure this user exists
         $user = User::findByEmail($email);
-        if ($user->isEmpty()) {
+        if (Option::isNone($user)) {
             printfn('No %s exists', $displayUser);
             return;
         }
@@ -164,7 +165,7 @@ function delete_user(string $email): void
 
         // Get the user for the provided e-mail address
         $tryUser = User::findByEmail($email);
-        if ($tryUser->isEmpty()) {
+        if (Option::isNone($tryUser)) {
             printfn('No %s exists', $displayUser);
             return;
         }
@@ -209,7 +210,7 @@ function migrate_single_user(): void
 
     try {
         $single = User::findByEmail(Security::SingleUserEmail);
-        if ($single->isEmpty()) {
+        if (Option::isNone($single)) {
             printfn('There is no single-user mode user to be migrated');
             return;
         }