diff --git a/config/phpstan/phpstan.neon b/config/phpstan/phpstan.neon
index 816ab4bf..cd07e7b6 100644
--- a/config/phpstan/phpstan.neon
+++ b/config/phpstan/phpstan.neon
@@ -10,8 +10,12 @@ parameters:
 
 		# Ignore errors caused by no type hints on class properties, as that's not available till PHP 7.4
 		- '#Property .+? has no typehint specified.#'
+
+		# Ignore errors caused by missing phpdoc strings for arrays
+		- '#Method .+? has parameter .+? with no value type specified in iterable type array.#'
 	level:
 		7
 	paths:
 		- %rootDir%/../../../lib
 		- %rootDir%/../../../www
+		- %rootDir%/../../../scripts
diff --git a/lib/Library.php b/lib/Library.php
index 03087e07..a0ecff2f 100644
--- a/lib/Library.php
+++ b/lib/Library.php
@@ -1,5 +1,6 @@
 <?
 use function Safe\apcu_fetch;
+use function Safe\ksort;
 use function Safe\preg_replace;
 use function Safe\touch;
 use function Safe\unlink;
diff --git a/lib/OpdsFeed.php b/lib/OpdsFeed.php
index 0862085e..df1954a1 100644
--- a/lib/OpdsFeed.php
+++ b/lib/OpdsFeed.php
@@ -1,4 +1,5 @@
 <?
+use function Safe\file_get_contents;
 use function Safe\file_put_contents;
 use function Safe\rename;
 use function Safe\tempnam;
@@ -34,9 +35,9 @@ class OpdsFeed{
 		$xml->registerXPathNamespace('dc', 'http://purl.org/dc/elements/1.1/');
 		$xml->registerXPathNamespace('schema', 'http://schema.org/');
 
-		$feedEntry = $xml->xpath('/feed/entry[id="' . $this->Id . '"]/updated')[0];
+		$feedEntry = ($xml->xpath('/feed/entry[id="' . $this->Id . '"]/updated') ?? [])[0];
 		$feedEntry[0] = $updatedTimestamp;
-		file_put_contents(WEB_ROOT . '/opds/index.xml', str_replace(" ns=", " xmlns=", $xml->asXml()));
+		file_put_contents(WEB_ROOT . '/opds/index.xml', str_replace(" ns=", " xmlns=", $xml->asXml() ?? ''));
 		exec('se clean ' . WEB_ROOT . '/opds/index.xml');
 	}
 }
diff --git a/scripts/generate-rss.php b/scripts/generate-rss.php
index 69f3384a..da32efce 100644
--- a/scripts/generate-rss.php
+++ b/scripts/generate-rss.php
@@ -1,4 +1,10 @@
 <?
+use function Safe\file_get_contents;
+use function Safe\getopt;
+use function Safe\krsort;
+use function Safe\preg_replace;
+use function Safe\strtotime;
+
 $longopts = array("webroot:", "weburl:");
 $options = getopt("", $longopts);
 $webRoot = $options["webroot"] ?? "/standardebooks.org/web";
diff --git a/www/manual/index.php b/www/manual/index.php
index 8371363f..565e6d1b 100644
--- a/www/manual/index.php
+++ b/www/manual/index.php
@@ -1,5 +1,8 @@
 <?
 require_once('Core.php');
+use function Safe\glob;
+use function Safe\preg_replace;
+use function Safe\sort;
 
 // Redirect to the latest version of the manual
 
diff --git a/www/opds/search.php b/www/opds/search.php
index 824cc1db..1345f730 100644
--- a/www/opds/search.php
+++ b/www/opds/search.php
@@ -1,7 +1,9 @@
 <?
 require_once('Core.php');
+use Safe\DateTime;
 
 $now = new DateTime('now', new DateTimeZone('UTC'));
+$ebooks = [];
 
 try{
 	$query = HttpInput::GetString('query', false);