diff --git a/classes/API.php b/classes/API.php
index 45820f300..6dbb1f246 100644
--- a/classes/API.php
+++ b/classes/API.php
@@ -817,7 +817,7 @@ class API extends Handler {
 
 					$headline_row["labels"] = $labels;
 
-					$headline_row["feed_title"] = isset($line["feed_title"]) ? $line["feed_title"] : $feed_title;
+					$headline_row["feed_title"] = $line["feed_title"] ?? $feed_title;
 
 					$headline_row["comments_count"] = (int)$line["num_comments"];
 					$headline_row["comments_link"] = $line["comments"];
diff --git a/classes/DiskCache.php b/classes/DiskCache.php
index 196eed02d..d6335a9e7 100644
--- a/classes/DiskCache.php
+++ b/classes/DiskCache.php
@@ -410,7 +410,7 @@ class DiskCache implements Cache_Adapter {
 		$mimetype = $this->adapter->get_mime_type(basename($filename));
 
 		if ($mimetype)
-			return isset($this->mimeMap[$mimetype]) ? $this->mimeMap[$mimetype] : "";
+			return $this->mimeMap[$mimetype] ?? "";
 		else
 			return "";
 	}
diff --git a/classes/Feeds.php b/classes/Feeds.php
index 64674b2d2..4b80cd336 100644
--- a/classes/Feeds.php
+++ b/classes/Feeds.php
@@ -1495,23 +1495,23 @@ class Feeds extends Handler_Protected {
 		// right before adding them to SQL part
 
 		$feed = $params["feed"];
-		$limit = isset($params["limit"]) ? $params["limit"] : 30;
+		$limit = $params["limit"] ?? 30;
 		$view_mode = $params["view_mode"];
-		$cat_view = isset($params["cat_view"]) ? $params["cat_view"] : false;
-		$search = isset($params["search"]) ? $params["search"] : false;
-		$search_language = isset($params["search_language"]) ? $params["search_language"] : "";
-		$override_order = isset($params["override_order"]) ? $params["override_order"] : false;
-		$offset = isset($params["offset"]) ? $params["offset"] : 0;
-		$owner_uid = isset($params["owner_uid"]) ? $params["owner_uid"] : $_SESSION["uid"];
-		$since_id = isset($params["since_id"]) ? $params["since_id"] : 0;
-		$include_children = isset($params["include_children"]) ? $params["include_children"] : false;
-		$ignore_vfeed_group = isset($params["ignore_vfeed_group"]) ? $params["ignore_vfeed_group"] : false;
-		$override_strategy = isset($params["override_strategy"]) ? $params["override_strategy"] : false;
-		$override_vfeed = isset($params["override_vfeed"]) ? $params["override_vfeed"] : false;
-		$start_ts = isset($params["start_ts"]) ? $params["start_ts"] : false;
-		$check_first_id = isset($params["check_first_id"]) ? $params["check_first_id"] : false;
-		$skip_first_id_check = isset($params["skip_first_id_check"]) ? $params["skip_first_id_check"] : false;
-		//$order_by = isset($params["order_by"]) ? $params["order_by"] : false;
+		$cat_view = $params["cat_view"] ?? false;
+		$search = $params["search"] ?? false;
+		$search_language = $params["search_language"] ?? "";
+		$override_order = $params["override_order"] ?? false;
+		$offset = $params["offset"] ?? 0;
+		$owner_uid = $params["owner_uid"] ?? $_SESSION["uid"];
+		$since_id = $params["since_id"] ?? 0;
+		$include_children = $params["include_children"] ?? false;
+		$ignore_vfeed_group = $params["ignore_vfeed_group"] ?? false;
+		$override_strategy = $params["override_strategy"] ?? false;
+		$override_vfeed = $params["override_vfeed"] ?? false;
+		$start_ts = $params["start_ts"] ?? false;
+		$check_first_id = $params["check_first_id"] ?? false;
+		$skip_first_id_check = $params["skip_first_id_check"] ?? false;
+		//$order_by = $params["order_by"] ?? false;
 
 		$ext_tables_part = "";
 		$limit_query_part = "";
diff --git a/classes/PluginHost.php b/classes/PluginHost.php
index 2098be4e6..f3febc431 100644
--- a/classes/PluginHost.php
+++ b/classes/PluginHost.php
@@ -586,11 +586,7 @@ class PluginHost {
 		$method = strtolower($method);
 
 		if (isset($this->handlers[$handler])) {
-			if (isset($this->handlers[$handler]["*"])) {
-				return $this->handlers[$handler]["*"];
-			} else {
-				return $this->handlers[$handler][$method];
-			}
+			return $this->handlers[$handler]["*"] ?? $this->handlers[$handler][$method];
 		}
 
 		return false;
@@ -752,15 +748,8 @@ class PluginHost {
 
 		if ($profile_id) {
 			$idx = get_class($sender);
-
 			$this->load_data();
-
-			if (isset($this->storage[$idx][$profile_id][$name])) {
-				return $this->storage[$idx][$profile_id][$name];
-			} else {
-				return $default_value;
-			}
-
+			return $this->storage[$idx][$profile_id][$name] ?? $default_value;
 		} else {
 			return $this->get($sender, $name, $default_value);
 		}
@@ -772,14 +761,8 @@ class PluginHost {
 	 */
 	function get(Plugin $sender, string $name, $default_value = false) {
 		$idx = get_class($sender);
-
 		$this->load_data();
-
-		if (isset($this->storage[$idx][$name])) {
-			return $this->storage[$idx][$name];
-		} else {
-			return $default_value;
-		}
+		return $this->storage[$idx][$name] ?? $default_value;
 	}
 
 	/**
diff --git a/classes/Pref_Prefs.php b/classes/Pref_Prefs.php
index 5cbf3c6d1..2bd9ae0bd 100644
--- a/classes/Pref_Prefs.php
+++ b/classes/Pref_Prefs.php
@@ -1481,17 +1481,11 @@ class Pref_Prefs extends Handler_Protected {
 	}
 
 	private function _get_short_desc(string $pref_name): string {
-		if (isset($this->pref_help[$pref_name][0])) {
-			return $this->pref_help[$pref_name][0];
-		}
-		return "";
+		return $this->pref_help[$pref_name][0] ?? "";
 	}
 
 	private function _get_help_text(string $pref_name): string {
-		if (isset($this->pref_help[$pref_name][1])) {
-			return $this->pref_help[$pref_name][1];
-		}
-		return "";
+		return $this->pref_help[$pref_name][1] ?? "";
 	}
 
 	private function appPasswordList(): void {
diff --git a/classes/Prefs.php b/classes/Prefs.php
index f778f0f84..8d84d5ec2 100644
--- a/classes/Prefs.php
+++ b/classes/Prefs.php
@@ -303,11 +303,7 @@ class Prefs {
 	 */
 	private function _get_cache(string $pref_name, int $owner_uid, ?int $profile_id) {
 		$cache_key = sprintf("%d/%d/%s", $owner_uid, $profile_id, $pref_name);
-
-		if (isset($this->cache[$cache_key]))
-			return $this->cache[$cache_key];
-
-		return null;
+		return $this->cache[$cache_key] ?? null;
 	}
 
 	/**
diff --git a/classes/UrlHelper.php b/classes/UrlHelper.php
index 7c426bedf..ba1f474bc 100644
--- a/classes/UrlHelper.php
+++ b/classes/UrlHelper.php
@@ -276,19 +276,19 @@ class UrlHelper {
 		}
 
 		$url = $options["url"];
-		$type = isset($options["type"]) ? $options["type"] : false;
-		$login = isset($options["login"]) ? $options["login"] : false;
-		$pass = isset($options["pass"]) ? $options["pass"] : false;
-		$auth_type = isset($options["auth_type"]) ? $options["auth_type"] : "basic";
-		$post_query = isset($options["post_query"]) ? $options["post_query"] : false;
-		$timeout = isset($options["timeout"]) ? $options["timeout"] : false;
-		$last_modified = isset($options["last_modified"]) ? $options["last_modified"] : "";
-		$useragent = isset($options["useragent"]) ? $options["useragent"] : false;
-		$followlocation = isset($options["followlocation"]) ? $options["followlocation"] : true;
-		$max_size = isset($options["max_size"]) ? $options["max_size"] : Config::get(Config::MAX_DOWNLOAD_FILE_SIZE); // in bytes
-		$http_accept = isset($options["http_accept"]) ? $options["http_accept"] : false;
-		$http_referrer = isset($options["http_referrer"]) ? $options["http_referrer"] : false;
-		$encoding = isset($options["encoding"]) ? $options["encoding"] : false;
+		$type = $options["type"] ?? false;
+		$login = $options["login"] ?? false;
+		$pass = $options["pass"] ?? false;
+		$auth_type = $options["auth_type"] ?? "basic";
+		$post_query = $options["post_query"] ?? false;
+		$timeout = $options["timeout"] ?? false;
+		$last_modified = $options["last_modified"] ?? "";
+		$useragent = $options["useragent"] ?? false;
+		$followlocation = $options["followlocation"] ?? true;
+		$max_size = $options["max_size"] ?? Config::get(Config::MAX_DOWNLOAD_FILE_SIZE); // in bytes
+		$http_accept = $options["http_accept"] ?? false;
+		$http_referrer = $options["http_referrer"] ?? false;
+		$encoding = $options["encoding"] ?? false;
 
 		$url = ltrim($url, ' ');
 		$url = str_replace(' ', '%20', $url);
diff --git a/include/colors.php b/include/colors.php
index 64e24f8f1..35b84b9de 100644
--- a/include/colors.php
+++ b/include/colors.php
@@ -156,10 +156,7 @@ function _resolve_htmlcolor(string $color): string {
 
 	$color = strtolower($color);
 
-	if (isset($htmlcolors[$color]))
-		return $htmlcolors[$color];
-	else
-		return $color;
+	return $htmlcolors[$color] ?? $color;
 }
 
 /**
diff --git a/plugins/auth_remote/init.php b/plugins/auth_remote/init.php
index 2fb45fdef..3a1fa4c16 100644
--- a/plugins/auth_remote/init.php
+++ b/plugins/auth_remote/init.php
@@ -64,13 +64,13 @@ class Auth_Remote extends Auth_Base {
 				// LemonLDAP can send user informations via HTTP HEADER
 				if (Config::get(Config::AUTH_AUTO_CREATE)) {
 					// update user name
-					$fullname = isset($_SERVER['HTTP_USER_NAME']) ? $_SERVER['HTTP_USER_NAME'] : ($_SERVER['AUTHENTICATE_CN'] ?? "");
+					$fullname = $_SERVER['HTTP_USER_NAME'] ?? $_SERVER['AUTHENTICATE_CN'] ?? '';
 					if ($fullname){
 						$sth = $this->pdo->prepare("UPDATE ttrss_users SET full_name = ? WHERE id = ?");
 						$sth->execute([$fullname, $user_id]);
 					}
 					// update user mail
-					$email = isset($_SERVER['HTTP_USER_MAIL']) ? $_SERVER['HTTP_USER_MAIL'] : ($_SERVER['AUTHENTICATE_MAIL'] ?? "");
+					$email = $_SERVER['HTTP_USER_MAIL'] ?? $_SERVER['AUTHENTICATE_MAIL'] ?? '';
 					if ($email){
 						$sth = $this->pdo->prepare("UPDATE ttrss_users SET email = ? WHERE id = ?");
 						$sth->execute([$email, $user_id]);