diff --git a/mod/register.php b/mod/register.php
index cd6385144c..8645ecb9ce 100644
--- a/mod/register.php
+++ b/mod/register.php
@@ -6,9 +6,9 @@ use Friendica\Core\PConfig;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
 
-require_once('include/enotify.php');
-require_once('include/bbcode.php');
 require_once('include/user.php');
+require_once 'include/enotify.php';
+require_once 'include/bbcode.php';
 
 if(! function_exists('register_post')) {
 function register_post(App $a) {
diff --git a/mod/regmod.php b/mod/regmod.php
index 6d76e7ea7e..7fce6914f2 100644
--- a/mod/regmod.php
+++ b/mod/regmod.php
@@ -6,11 +6,12 @@ use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;
 
-require_once('include/enotify.php');
 require_once('include/user.php');
 
-function user_allow($hash) {
+require_once 'include/enotify.php';
 
+function user_allow($hash)
+{
 	$a = get_app();
 
 	$register = q("SELECT * FROM `register` WHERE `hash` = '%s' LIMIT 1",
@@ -18,7 +19,7 @@ function user_allow($hash) {
 	);
 
 
-	if (! DBM::is_result($register)) {
+	if (!DBM::is_result($register)) {
 		return false;
 	}
 
@@ -26,7 +27,7 @@ function user_allow($hash) {
 		intval($register[0]['uid'])
 	);
 
-	if (! DBM::is_result($user)) {
+	if (!DBM::is_result($user)) {
 		killme();
 	}
 
@@ -44,7 +45,7 @@ function user_allow($hash) {
 	);
 	if (DBM::is_result($r) && $r[0]['net-publish']) {
 		$url = System::baseUrl() . '/profile/' . $user[0]['nickname'];
-		if ($url && strlen(Config::get('system','directory'))) {
+		if ($url && strlen(Config::get('system', 'directory'))) {
 			Worker::add(PRIORITY_LOW, "Directory", $url);
 		}
 	}
@@ -60,20 +61,17 @@ function user_allow($hash) {
 
 	pop_lang();
 
-	if($res) {
-		info( t('Account approved.') . EOL );
+	if ($res) {
+		info(t('Account approved.') . EOL);
 		return true;
 	}
-
 }
 
-
 // This does not have to go through user_remove() and save the nickname
 // permanently against re-registration, as the person was not yet
 // allowed to have friends on this system
-
-function user_deny($hash) {
-
+function user_deny($hash)
+{
 	$register = q("SELECT * FROM `register` WHERE `hash` = '%s' LIMIT 1",
 		dbesc($hash)
 	);
@@ -91,23 +89,22 @@ function user_deny($hash) {
 
 	notice(sprintf(t('Registration revoked for %s'), $user[0]['username']) . EOL);
 	return true;
-
 }
 
-function regmod_content(App $a) {
-
+function regmod_content(App $a)
+{
 	global $lang;
 
 	$_SESSION['return_url'] = $a->cmd;
 
-	if (! local_user()) {
-		info( t('Please login.') . EOL);
+	if (!local_user()) {
+		info(t('Please login.') . EOL);
 		$o .= '<br /><br />' . login(($a->config['register_policy'] == REGISTER_CLOSED) ? 0 : 1);
 		return $o;
 	}
 
-	if ((!is_site_admin()) || (x($_SESSION,'submanage') && intval($_SESSION['submanage']))) {
-		notice( t('Permission denied.') . EOL);
+	if ((!is_site_admin()) || (x($_SESSION, 'submanage') && intval($_SESSION['submanage']))) {
+		notice(t('Permission denied.') . EOL);
 		return '';
 	}
 
@@ -115,20 +112,18 @@ function regmod_content(App $a) {
 		killme();
 	}
 
-	$cmd  = $a->argv[1];
+	$cmd = $a->argv[1];
 	$hash = $a->argv[2];
 
-
-
 	if ($cmd === 'deny') {
 		user_deny($hash);
-		goaway(System::baseUrl()."/admin/users/");
+		goaway(System::baseUrl() . "/admin/users/");
 		killme();
 	}
 
 	if ($cmd === 'allow') {
 		user_allow($hash);
-		goaway(System::baseUrl()."/admin/users/");
+		goaway(System::baseUrl() . "/admin/users/");
 		killme();
 	}
 }
diff --git a/src/Model/User.php b/src/Model/User.php
index b2beb8e19b..398cd19b42 100644
--- a/src/Model/User.php
+++ b/src/Model/User.php
@@ -20,6 +20,19 @@ require_once 'include/plugin.php';
  */
 class User
 {
+	/**
+	 * @brief Authenticate a user with a clear text password
+	 *
+	 * User info can be any of the following:
+	 * - User DB object
+	 * - User Id
+	 * - User email or username or nickname
+	 * - User array with at least the uid and the hashed password
+	 *
+	 * @param mixed $user_info
+	 * @param string $password
+	 * @return boolean
+	 */
 	public static function authenticate($user_info, $password)
 	{
 		if (is_object($user_info)) {
diff --git a/src/Worker/CronJobs.php b/src/Worker/CronJobs.php
index cbfa86ed88..a59cd4f9f1 100644
--- a/src/Worker/CronJobs.php
+++ b/src/Worker/CronJobs.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * @file src/worker/CronJobs.php
  */
@@ -14,22 +15,23 @@ use Friendica\Network\Probe;
 use Friendica\Protocol\PortableContact;
 use dba;
 
-class CronJobs {
-	public static function execute($command = ''){
+class CronJobs
+{
+	public static function execute($command = '')
+	{
 		global $a;
 
 		require_once 'include/datetime.php';
 		require_once 'include/post_update.php';
 		require_once 'mod/nodeinfo.php';
 		require_once 'include/photos.php';
-		require_once 'include/user.php';
 
 		// No parameter set? So return
 		if ($command == '') {
 			return;
 		}
 
-		logger("Starting cronjob ".$command, LOGGER_DEBUG);
+		logger("Starting cronjob " . $command, LOGGER_DEBUG);
 
 		// Call possible post update functions
 		// see include/post_update.php for more details
@@ -78,7 +80,7 @@ class CronJobs {
 			return;
 		}
 
-		logger("Xronjob ".$command." is unknown.", LOGGER_DEBUG);
+		logger("Xronjob " . $command . " is unknown.", LOGGER_DEBUG);
 
 		return;
 	}
@@ -86,7 +88,8 @@ class CronJobs {
 	/**
 	 * @brief Update the cached values for the number of photo albums per user
 	 */
-	private static function updatePhotoAlbums() {
+	private static function updatePhotoAlbums()
+	{
 		$r = q("SELECT `uid` FROM `user` WHERE NOT `account_expired` AND NOT `account_removed`");
 		if (!DBM::is_result($r)) {
 			return;
@@ -100,7 +103,8 @@ class CronJobs {
 	/**
 	 * @brief Expire and remove user entries
 	 */
-	private static function expireAndRemoveUsers() {
+	private static function expireAndRemoveUsers()
+	{
 		// expire any expired accounts
 		q("UPDATE user SET `account_expired` = 1 where `account_expired` = 0
 			AND `account_expires_on` > '%s'
@@ -120,9 +124,9 @@ class CronJobs {
 	 *
 	 * @param App $a
 	 */
-	private static function clearCache(App $a) {
-
-		$last = Config::get('system','cache_last_cleared');
+	private static function clearCache(App $a)
+	{
+		$last = Config::get('system', 'cache_last_cleared');
 
 		if ($last) {
 			$next = $last + (3600); // Once per hour
@@ -142,16 +146,16 @@ class CronJobs {
 		clear_cache();
 
 		// clear cache for photos
-		clear_cache($a->get_basepath(), $a->get_basepath()."/photo");
+		clear_cache($a->get_basepath(), $a->get_basepath() . "/photo");
 
 		// clear smarty cache
-		clear_cache($a->get_basepath()."/view/smarty3/compiled", $a->get_basepath()."/view/smarty3/compiled");
+		clear_cache($a->get_basepath() . "/view/smarty3/compiled", $a->get_basepath() . "/view/smarty3/compiled");
 
 		// clear cache for image proxy
 		if (!Config::get("system", "proxy_disabled")) {
-			clear_cache($a->get_basepath(), $a->get_basepath()."/proxy");
+			clear_cache($a->get_basepath(), $a->get_basepath() . "/proxy");
 
-			$cachetime = Config::get('system','proxy_cache_time');
+			$cachetime = Config::get('system', 'proxy_cache_time');
 			if (!$cachetime) {
 				$cachetime = PROXY_DEFAULT_TIME;
 			}
@@ -166,13 +170,13 @@ class CronJobs {
 		dba::delete('parsed_url', array("`created` < NOW() - INTERVAL 3 MONTH"));
 
 		// Maximum table size in megabyte
-		$max_tablesize = intval(Config::get('system','optimize_max_tablesize')) * 1000000;
+		$max_tablesize = intval(Config::get('system', 'optimize_max_tablesize')) * 1000000;
 		if ($max_tablesize == 0) {
 			$max_tablesize = 100 * 1000000; // Default are 100 MB
 		}
 		if ($max_tablesize > 0) {
 			// Minimum fragmentation level in percent
-			$fragmentation_level = intval(Config::get('system','optimize_fragmentation')) / 100;
+			$fragmentation_level = intval(Config::get('system', 'optimize_fragmentation')) / 100;
 			if ($fragmentation_level == 0) {
 				$fragmentation_level = 0.3; // Default value is 30%
 			}
@@ -194,7 +198,7 @@ class CronJobs {
 				// Calculate fragmentation
 				$fragmentation = $table["Data_free"] / ($table["Data_length"] + $table["Index_length"]);
 
-				logger("Table ".$table["Name"]." - Fragmentation level: ".round($fragmentation * 100, 2), LOGGER_DEBUG);
+				logger("Table " . $table["Name"] . " - Fragmentation level: " . round($fragmentation * 100, 2), LOGGER_DEBUG);
 
 				// Don't optimize tables that needn't to be optimized
 				if ($fragmentation < $fragmentation_level) {
@@ -202,12 +206,12 @@ class CronJobs {
 				}
 
 				// So optimize it
-				logger("Optimize Table ".$table["Name"], LOGGER_DEBUG);
+				logger("Optimize Table " . $table["Name"], LOGGER_DEBUG);
 				q("OPTIMIZE TABLE `%s`", dbesc($table["Name"]));
 			}
 		}
 
-		Config::set('system','cache_last_cleared', time());
+		Config::set('system', 'cache_last_cleared', time());
 	}
 
 	/**
@@ -215,8 +219,8 @@ class CronJobs {
 	 *
 	 * @param App $a
 	 */
-	private static function repairDiaspora(App $a) {
-
+	private static function repairDiaspora(App $a)
+	{
 		$starttime = time();
 
 		$r = q("SELECT `id`, `url` FROM `contact`
@@ -241,7 +245,7 @@ class CronJobs {
 				continue;
 			}
 
-			logger("Repair contact ".$contact["id"]." ".$contact["url"], LOGGER_DEBUG);
+			logger("Repair contact " . $contact["id"] . " " . $contact["url"], LOGGER_DEBUG);
 			q("UPDATE `contact` SET `batch` = '%s', `notify` = '%s', `poll` = '%s', pubkey = '%s' WHERE `id` = %d",
 				dbesc($data["batch"]), dbesc($data["notify"]), dbesc($data["poll"]), dbesc($data["pubkey"]),
 				intval($contact["id"]));
@@ -252,15 +256,15 @@ class CronJobs {
 	 * @brief Do some repairs in database entries
 	 *
 	 */
-	private static function repairDatabase() {
-
+	private static function repairDatabase()
+	{
 		// Sometimes there seem to be issues where the "self" contact vanishes.
 		// We haven't found the origin of the problem by now.
 		$r = q("SELECT `uid` FROM `user` WHERE NOT EXISTS (SELECT `uid` FROM `contact` WHERE `contact`.`uid` = `user`.`uid` AND `contact`.`self`)");
 		if (DBM::is_result($r)) {
 			foreach ($r AS $user) {
-				logger('Create missing self contact for user '.$user['uid']);
 				user_create_self_contact($user['uid']);
+				logger('Create missing self contact for user ' . $user['uid']);
 			}
 		}