diff --git a/dwpost/dwpost.php b/dwpost/dwpost.php
index 24bdcdbb..b0d68e84 100644
--- a/dwpost/dwpost.php
+++ b/dwpost/dwpost.php
@@ -13,6 +13,7 @@ use Friendica\Content\Text\BBCode;
 use Friendica\Core\Addon;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
+use Friendica\Database\DBM;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Network;
 
@@ -170,17 +171,19 @@ function dwpost_send(App $a, array &$b) {
 
 	$tz = 'UTC';
 
-	$x = q("select timezone from user where uid = %d limit 1",
+	$x = q("SELECT `timezone` FROM `user` WHERE `uid`=%d LIMIT 1",
 		intval($b['uid'])
 	);
-	if($x && strlen($x[0]['timezone']))
+
+	if (DBM::is_result($x) && strlen($x[0]['timezone'])) {
 		$tz = $x[0]['timezone'];
+	}
 
 	$dw_username = PConfig::get($b['uid'],'dwpost','dw_username');
 	$dw_password = PConfig::get($b['uid'],'dwpost','dw_password');
 	$dw_blog = 'http://www.dreamwidth.org/interface/xmlrpc';
 
-	if($dw_username && $dw_password && $dw_blog) {
+	if ($dw_username && $dw_password && $dw_blog) {
 		$title = $b['title'];
 		$post = BBCode::convert($b['body']);
 		$post = xmlify($post);
diff --git a/geocoordinates/geocoordinates.php b/geocoordinates/geocoordinates.php
index 9b70e19b..1df5bbe5 100644
--- a/geocoordinates/geocoordinates.php
+++ b/geocoordinates/geocoordinates.php
@@ -28,7 +28,7 @@ function geocoordinates_uninstall()
 
 function geocoordinates_resolve_item(array &$item)
 {
-	if (!isset($item['coord']) || isset($item['location'])) {
+	if (empty($item['coord']) || !empty($item['location'])) {
 		return;
 	}
 
@@ -38,7 +38,7 @@ function geocoordinates_resolve_item(array &$item)
 		return;
 	}
 
-	$language = Config::get("geocoordinates", "language");
+	$language = Config::get("geocoordinates", "language", "de");
 
 	if ($language == "") {
 		$language = "de";
@@ -62,7 +62,7 @@ function geocoordinates_resolve_item(array &$item)
 
 	$s = Network::fetchUrl("https://api.opencagedata.com/geocode/v1/json?q=".$coords[0].",".$coords[1]."&key=".$key."&language=".$language);
 
-	if ($s === FALSE) {
+	if ($s === FALSE || empty($s)) {
 		logger("API could not be queried", LOGGER_DEBUG);
 		return;
 	}
@@ -83,8 +83,9 @@ function geocoordinates_resolve_item(array &$item)
 
 	logger("Got location for coordinates ".$coords[0]."-".$coords[1].": ".$item["location"], LOGGER_DEBUG);
 
-	if ($item["location"] != "")
+	if ($item["location"] != "") {
 		Cache::set("geocoordinates:".$language.":".$coords[0]."-".$coords[1], $item["location"]);
+	}
 }
 
 function geocoordinates_post_hook(App $a, array &$item)
diff --git a/ijpost/ijpost.php b/ijpost/ijpost.php
index 0957bb91..e6eff3d8 100644
--- a/ijpost/ijpost.php
+++ b/ijpost/ijpost.php
@@ -13,6 +13,7 @@ use Friendica\Content\Text\BBCode;
 use Friendica\Core\Addon;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
+use Friendica\Database\DBM;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Network;
 
@@ -168,17 +169,19 @@ function ijpost_send(App $a, array &$b) {
 
 	$tz = 'UTC';
 
-	$x = q("select timezone from user where uid = %d limit 1",
+	$x = q("SELECT `timezone` FROM `user` WHERE `uid`=%d LIMIT 1",
 		intval($b['uid'])
 	);
-	if($x && strlen($x[0]['timezone']))
+
+	if (DBM::is_result($x) && strlen($x[0]['timezone'])) {
 		$tz = $x[0]['timezone'];
+	}
 
 	$ij_username = PConfig::get($b['uid'],'ijpost','ij_username');
 	$ij_password = PConfig::get($b['uid'],'ijpost','ij_password');
 	$ij_blog = 'http://www.insanejournal.com/interface/xmlrpc';
 
-	if($ij_username && $ij_password && $ij_blog) {
+	if ($ij_username && $ij_password && $ij_blog) {
 		$title = $b['title'];
 		$post = BBCode::convert($b['body']);
 		$post = xmlify($post);
diff --git a/ljpost/ljpost.php b/ljpost/ljpost.php
index cb4f3f23..e9821544 100644
--- a/ljpost/ljpost.php
+++ b/ljpost/ljpost.php
@@ -13,6 +13,7 @@ use Friendica\Content\Text\BBCode;
 use Friendica\Core\Addon;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
+use Friendica\Database\DBM;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Network;
 
@@ -163,11 +164,13 @@ function ljpost_send(App $a, array &$b) {
 
 	$tz = 'UTC';
 
-	$x = q("select timezone from user where uid = %d limit 1",
+	$x = q("SELECT `timezone` FROM `user` WHERE `uid` = %d LIMIT 1",
 		intval($b['uid'])
 	);
-	if($x && strlen($x[0]['timezone']))
+
+	if (DBM::is_result($x) && strlen($x[0]['timezone'])) {
 		$tz = $x[0]['timezone'];
+	}
 
 	$lj_username = xmlify(PConfig::get($b['uid'],'ljpost','lj_username'));
 	$lj_password = xmlify(PConfig::get($b['uid'],'ljpost','lj_password'));
@@ -176,10 +179,11 @@ function ljpost_send(App $a, array &$b) {
 //		$lj_journal = $lj_username;
 
 	$lj_blog = xmlify(PConfig::get($b['uid'],'ljpost','lj_blog'));
-	if(! strlen($lj_blog))
+	if (! strlen($lj_blog)) {
 		$lj_blog = xmlify('http://www.livejournal.com/interface/xmlrpc');
+	}
 
-	if($lj_username && $lj_password && $lj_blog) {
+	if ($lj_username && $lj_password && $lj_blog) {
 		$title = xmlify($b['title']);
 		$post = BBCode::convert($b['body']);
 		$post = xmlify($post);
diff --git a/testdrive/testdrive.php b/testdrive/testdrive.php
index 8ec5703e..16c21554 100644
--- a/testdrive/testdrive.php
+++ b/testdrive/testdrive.php
@@ -63,8 +63,8 @@ function testdrive_register_account($a,$b) {
 function testdrive_cron($a,$b) {
 	require_once('include/enotify.php');
 
-	$r = q("select * from user where account_expires_on < UTC_TIMESTAMP() + INTERVAL 5 DAY and
-		expire_notification_sent = '0000-00-00 00:00:00' ");
+	$r = q("SELECT * FROM `user` WHERE `account_expires_on` < UTC_TIMESTAMP() + INTERVAL 5 DAY AND
+		`expire_notification_sent` = '0000-00-00 00:00:00'");
 
 	if (DBM::is_result($r)) {
 		foreach($r as $rr) {
@@ -80,15 +80,14 @@ function testdrive_cron($a,$b) {
 				'source_photo' => $a->get_baseurl() . '/images/person-80.jpg',
 			]);
 
-			q("update user set expire_notification_sent = '%s' where uid = %d",
+			q("UPDATE `user` SET `expire_notification_sent`='%s' WHERE `uid`=%d",
 				dbesc(DateTimeFormat::utcNow()),
 				intval($rr['uid'])
 			);
-
 		}
 	}
 
-	$r = q("select * from user where account_expired = 1 and account_expires_on < UTC_TIMESTAMP() - INTERVAL 5 DAY ");
+	$r = q("SELECT * FROM `user` WHERE `account_expired`=1 AND `account_expires_on` < UTC_TIMESTAMP() - INTERVAL 5 DAY");
 
 	if (DBM::is_result($r)) {
 		foreach($r as $rr) {