diff --git a/src/Content/Text/BBCode.php b/src/Content/Text/BBCode.php
index e304f47637..6d2b152ee8 100644
--- a/src/Content/Text/BBCode.php
+++ b/src/Content/Text/BBCode.php
@@ -626,7 +626,7 @@ class BBCode extends BaseObject
 			$data["title"] = $data["url"];
 		}
 
-		if (($data["text"] == "") && ($data["title"] != "") && ($data["url"] == "")) {
+		if (empty($data["text"]) && !empty($data["title"]) && empty($data["url"])) {
 			return $data["title"] . $data["after"];
 		}
 
diff --git a/src/Model/GContact.php b/src/Model/GContact.php
index 3acffb059d..44d1edecd7 100644
--- a/src/Model/GContact.php
+++ b/src/Model/GContact.php
@@ -966,8 +966,8 @@ class GContact
 
 		$statistics = json_decode($curlResult->getBody());
 
-		if (!empty($statistics->config)) {
-			if ($statistics->config->instance_with_ssl) {
+		if (!empty($statistics->config->instance_address)) {
+			if (!empty($statistics->config->instance_with_ssl)) {
 				$server = "https://";
 			} else {
 				$server = "http://";
@@ -976,8 +976,8 @@ class GContact
 			$server .= $statistics->config->instance_address;
 
 			$hostname = $statistics->config->instance_address;
-		} elseif (!empty($statistics)) {
-			if ($statistics->instance_with_ssl) {
+		} elseif (!empty($statistics->instance_address)) {
+			if (!empty($statistics->instance_with_ssl)) {
 				$server = "https://";
 			} else {
 				$server = "http://";
diff --git a/src/Protocol/Email.php b/src/Protocol/Email.php
index ba8c311901..358ff27db0 100644
--- a/src/Protocol/Email.php
+++ b/src/Protocol/Email.php
@@ -117,7 +117,7 @@ class Email
 			return $ret;
 		}
 
-		if (!$struc->parts) {
+		if (empty($struc->parts)) {
 			$ret['body'] = self::messageGetPart($mbox, $uid, $struc, 0, 'html');
 			$html = $ret['body'];
 
@@ -482,13 +482,11 @@ class Email
 			'[\r\n]\s*-----BEGIN PGP SIGNATURE-----\s*[\r\n].*'.
 			'[\r\n]\s*-----END PGP SIGNATURE-----(.*)/is';
 
-		preg_match($pattern, $message, $result);
+		if (preg_match($pattern, $message, $result)) {
+			$cleaned = trim($result[1].$result[2].$result[3]);
 
-		$cleaned = trim($result[1].$result[2].$result[3]);
-
-		$cleaned = str_replace(["\n- --\n", "\n- -"], ["\n-- \n", "\n-"], $cleaned);
-
-		if ($cleaned == '') {
+			$cleaned = str_replace(["\n- --\n", "\n- -"], ["\n-- \n", "\n-"], $cleaned);
+		} else {
 			$cleaned = $message;
 		}
 
diff --git a/src/Protocol/OStatus.php b/src/Protocol/OStatus.php
index 45000d7700..361d333b40 100644
--- a/src/Protocol/OStatus.php
+++ b/src/Protocol/OStatus.php
@@ -1543,8 +1543,10 @@ class OStatus
 	 */
 	private static function constructObjecttype(array $item)
 	{
-		if (in_array($item['object-type'], [ACTIVITY_OBJ_NOTE, ACTIVITY_OBJ_COMMENT]))
+		if (!empty($item['object-type']) && in_array($item['object-type'], [ACTIVITY_OBJ_NOTE, ACTIVITY_OBJ_COMMENT])) {
 			return $item['object-type'];
+		}
+
 		return ACTIVITY_OBJ_NOTE;
 	}
 
diff --git a/src/Protocol/PortableContact.php b/src/Protocol/PortableContact.php
index 8a20142dba..de49a8d3ca 100644
--- a/src/Protocol/PortableContact.php
+++ b/src/Protocol/PortableContact.php
@@ -1375,7 +1375,7 @@ class PortableContact
 						$site_name = $data['site_name'];
 					}
 
-					$info = $data['info'];
+					$info = defaults($data, 'info', '');
 					$register_policy = defaults($data, 'register_policy', REGISTER_CLOSED);
 					if (in_array($register_policy, ['REGISTER_CLOSED', 'REGISTER_APPROVE', 'REGISTER_OPEN'])) {
 						$register_policy = constant($data['register_policy']);
@@ -1383,7 +1383,7 @@ class PortableContact
 						Logger::log("Register policy '$register_policy' from $server_url is invalid.");
 						$register_policy = REGISTER_CLOSED; // set a default value
 					}
-					$platform = $data['platform'];
+					$platform = defaults($data, 'platform', '');
 				}
 			}
 		}
diff --git a/src/Util/Network.php b/src/Util/Network.php
index e7707baf38..ab0958d642 100644
--- a/src/Util/Network.php
+++ b/src/Util/Network.php
@@ -362,7 +362,7 @@ class Network
 		/// @TODO Really suppress function outcomes? Why not find them + debug them?
 		$h = @parse_url($url);
 
-		if ((is_array($h)) && (@dns_get_record($h['host'], DNS_A + DNS_CNAME) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
+		if (!empty($h['host']) && (@dns_get_record($h['host'], DNS_A + DNS_CNAME) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
 			return $url;
 		}
 
diff --git a/src/Worker/GProbe.php b/src/Worker/GProbe.php
index 4f51db2dfb..49638c7c94 100644
--- a/src/Worker/GProbe.php
+++ b/src/Worker/GProbe.php
@@ -35,7 +35,7 @@ class GProbe {
 			$result = Cache::get("gprobe:".$urlparts["host"]);
 			if (!is_null($result)) {
 				if (in_array($result["network"], [Protocol::FEED, Protocol::PHANTOM])) {
-					Logger::log("DDoS attempt detected for ".$urlparts["host"]." by ".$_SERVER["REMOTE_ADDR"].". server data: ".print_r($_SERVER, true), Logger::DEBUG);
+					Logger::log("DDoS attempt detected for ".$urlparts["host"]." by ".defaults($_SERVER, "REMOTE_ADDR", '').". server data: ".print_r($_SERVER, true), Logger::DEBUG);
 					return;
 				}
 			}