diff --git a/cron.php b/cron.php
index d8d2ff1..cc7b2e0 100644
--- a/cron.php
+++ b/cron.php
@@ -125,14 +125,14 @@ foreach ($mx_db->query($sql) as $row) {
 
 try {
     //cleanup: all finished entries older than one month
-    $timestamp = date('Y-m-d H:m:s',strtotime("-1 month"));
+    $timestamp = date('Y-m-d H:m:s', strtotime("-1 month"));
     $mx_db->query("DELETE FROM registrations "
             . "WHERE request_date < '$timestamp'"
             . " AND (state = " . RegisterState::RegistrationDeclined
             . " OR state = " . RegisterState::AllDone . " );"
     );
     //cleanup: all entries which are pending email registration older than two days
-    $timestamp = date('Y-m-d H:m:s',strtotime("-2 days"));
+    $timestamp = date('Y-m-d H:m:s', strtotime("-2 days"));
     $mx_db->query("DELETE FROM registrations "
             . "WHERE request_date < '$timestamp'"
             . " AND state = " . RegisterState::PendingEmailVerify . ";"
diff --git a/lang/lang.en-gb.php b/lang/lang.en-gb.php
index 281d569..1172390 100644
--- a/lang/lang.en-gb.php
+++ b/lang/lang.en-gb.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2018 Matthias Kesler
  * Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/lang/mail.de-de.php b/lang/mail.de-de.php
index 42eaaec..f96662a 100644
--- a/lang/mail.de-de.php
+++ b/lang/mail.de-de.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2018 Matthias Kesler
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,15 +15,15 @@
  * limitations under the License.
  */
 function send_mail($receiver, $subject, $body) {
-	include(__DIR__ . "/../config.php");
-	$headers = "From: " . $config["register_email"] . "\r\n"
-		. "Content-Type: text/plain;charset=utf-8";
-	return mail($receiver, $subject, $body, $headers);
+    include(__DIR__ . "/../config.php");
+    $headers = "From: " . $config["register_email"] . "\r\n"
+            . "Content-Type: text/plain;charset=utf-8";
+    return mail($receiver, $subject, $body, $headers);
 }
 
 function send_mail_pending_verification($homeserver, $user, $receiver, $verify_url) {
-	$subject = "Bitte bestätige Registrierung auf $homeserver";
-	$body = "Guten Tag " . $user . ",
+    $subject = "Bitte bestätige Registrierung auf $homeserver";
+    $body = "Guten Tag " . $user . ",
 
 Du hast anscheinend versucht dich auf $homeserver zu registrieren.
 Hier gibt es eine zweistufige Registrierung.
@@ -39,12 +40,12 @@ Danach ist eine Re-Registrierung mit deinem gewünschten Nutzernamen für andere
 Vielen Dank für dein Verständnis.
 
 Das Administratoren-Team von " . $homeserver;
-	return send_mail($receiver, $subject, $body );
+    return send_mail($receiver, $subject, $body);
 }
 
 function send_mail_pending_approval($homeserver, $user, $receiver) {
-	$subject = "Registrierung wartet auf Bestätigung durch Administratoren";
-	$body = "Guten Tag " . $user . ",
+    $subject = "Registrierung wartet auf Bestätigung durch Administratoren";
+    $body = "Guten Tag " . $user . ",
 
 Deine Registrierungsanfrage wurde verifiziert und wird nun durch die Administratoren überprüft.
 
@@ -53,12 +54,12 @@ Du bekommst eine weitere E-Mail, sobald deine Registrierung bestätigt oder able
 Vielen Dank für dein Verständnis.
 
 Das Administratoren-Team von " . $homeserver;
-	return send_mail($receiver, $subject, $body );
+    return send_mail($receiver, $subject, $body);
 }
 
 function send_mail_registration_allowed_but_failed($homeserver, $user, $receiver) {
-	$subject = "Registrierung auf $homeserver genehmigt";
-	$body = "Guten Tag " . $user . ",
+    $subject = "Registrierung auf $homeserver genehmigt";
+    $body = "Guten Tag " . $user . ",
 
 Deine Registrierungsanfrage wurde durch die Administratoren bestätigt.
 
@@ -67,13 +68,12 @@ Wir hoffen, das Problem ist bald behoben.
 Wir melden uns, wenn die Registrierung erfolgreich war.
 
 Das Administratoren-Team von " . $homeserver;
-	return send_mail($receiver, $subject, $body);
-
+    return send_mail($receiver, $subject, $body);
 }
 
 function send_mail_registration_success($homeserver, $user, $receiver, $username, $password, $howToURL) {
-	$subject = "Registrierung auf $homeserver erfolgreich";
-	$body = "Guten Tag " . $user . ",
+    $subject = "Registrierung auf $homeserver erfolgreich";
+    $body = "Guten Tag " . $user . ",
 
 Deine Registrierungsanfrage wurde durch die Administratoren bestätigt.
 
@@ -84,41 +84,42 @@ Passwort: $password
 Hinweis: Das Passwort kannst du aktuell über die App selbst ändern. Auch wenn das Passwort nirgends
 im Klartext gespeichert wird, kann jemand Zugriff auf diese Mail erlangen und so den Zugriff bekommen.
 ";
-/*
-Wichtig: Bitte ändere das Passwort direkt nach der Anmeldung.
-Es wird zwar von unserer Seite nicht gespeichert, doch fremde könnten Zugriff auf diese E-Mail
-erhalten und so deinen Account kompromittieren.
- */
-if (!empty($howToURL)) {
-	$body .= "
+    /*
+      Wichtig: Bitte ändere das Passwort direkt nach der Anmeldung.
+      Es wird zwar von unserer Seite nicht gespeichert, doch fremde könnten Zugriff auf diese E-Mail
+      erhalten und so deinen Account kompromittieren.
+     */
+    if (!empty($howToURL)) {
+        $body .= "
 Zu weiteren Hilfestellungen findest du hier eine Auflistung von verschiedenen
 Anleitungen zu verschiedenen Clients:
 $howToURL\n";
-}
-	$body .= "
+    }
+    $body .= "
 Viel Spaß bei der Verwendung von $homeserver.
 Bei Fragen findest du nach der Anmeldung ein paar Räume in denen du sie stellen kannst.
 
 Das Administratoren-Team von " . $homeserver;
-	return send_mail($receiver, $subject, $body);
-
+    return send_mail($receiver, $subject, $body);
 }
+
 function send_mail_registration_decline($homeserver, $user, $receiver, $reason) {
-	$subject = "Registrierung auf $homeserver abgelehnt";
-	$body = "Guten Tag " . $user . ",
+    $subject = "Registrierung auf $homeserver abgelehnt";
+    $body = "Guten Tag " . $user . ",
 
 Deine Registrierungsanfrage wurde durch die Administratoren abgelehnt.\n";
 
-	if (empty($reason)) {
-		$body .= "\nEs wurde kein Grund angegeben\n";
-	} else {
-		$body .= "\nAls Grund wurde folgendes angegeben:\n$reason\n";
-	}
+    if (empty($reason)) {
+        $body .= "\nEs wurde kein Grund angegeben\n";
+    } else {
+        $body .= "\nAls Grund wurde folgendes angegeben:\n$reason\n";
+    }
 
-	$body .= "
+    $body .= "
 Wir hoffen, dass du dies akzeptieren kannst.
 
 Das Administratoren-Team von " . $homeserver;
-	return send_mail($receiver, $subject, $body );
+    return send_mail($receiver, $subject, $body);
 }
+
 ?>
diff --git a/lang/mail.en-gb.php b/lang/mail.en-gb.php
index b77a285..4f226d5 100644
--- a/lang/mail.en-gb.php
+++ b/lang/mail.en-gb.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2018 Matthias Kesler
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,15 +15,15 @@
  * limitations under the License.
  */
 function send_mail($receiver, $subject, $body) {
-	include(__DIR__ . "/../config.php");
-	$headers = "From: " . $config["register_email"] . "\r\n"
-		. "Content-Type: text/plain;charset=utf-8";
-	return mail($receiver, $subject, $body, $headers);
+    include(__DIR__ . "/../config.php");
+    $headers = "From: " . $config["register_email"] . "\r\n"
+            . "Content-Type: text/plain;charset=utf-8";
+    return mail($receiver, $subject, $body, $headers);
 }
 
 function send_mail_pending_verification($homeserver, $user, $receiver, $verify_url) {
-	$subject = "Pleast approve your registration request on $homeserver";
-	$body = "Dear " . $user . ",
+    $subject = "Pleast approve your registration request on $homeserver";
+    $body = "Dear " . $user . ",
 
 It seems that you tried to register on $homeserver.
 This homeserver requires a two step registration.
@@ -38,12 +39,12 @@ Others might take your username afterwards.
 Thanks for your patience.
 
 The admin team of " . $homeserver;
-	return send_mail($receiver, $subject, $body );
+    return send_mail($receiver, $subject, $body);
 }
 
 function send_mail_pending_approval($homeserver, $user, $receiver) {
-	$subject = "Registration is pending verification from an admin";
-	$body = "Dear " . $user . ",
+    $subject = "Registration is pending verification from an admin";
+    $body = "Dear " . $user . ",
 
 You have verified your registration request. The admins are now checking your request.
 
@@ -52,12 +53,12 @@ You will get an email once they approve or decline your request.
 Sincerely,
 
 The admin team of " . $homeserver;
-	return send_mail($receiver, $subject, $body );
+    return send_mail($receiver, $subject, $body);
 }
 
 function send_mail_registration_allowed_but_failed($homeserver, $user, $receiver) {
-	$subject = "Registration on $homeserver got approved";
-	$body = "Dear " . $user . ",
+    $subject = "Registration on $homeserver got approved";
+    $body = "Dear " . $user . ",
 
 Your registration request got approved by the admin team.
 
@@ -66,13 +67,12 @@ We hope that the issue will be fixed soon.
 You will get another email with initial credentials once the registration got handled completely.
 
 The admin team of " . $homeserver;
-	return send_mail($receiver, $subject, $body);
-
+    return send_mail($receiver, $subject, $body);
 }
 
 function send_mail_registration_success($homeserver, $user, $receiver, $username, $password, $howToURL) {
-	$subject = "Registration on $homeserver got approved";
-	$body = "Dear " . $user . ",
+    $subject = "Registration on $homeserver got approved";
+    $body = "Dear " . $user . ",
 
 Your registration request got verified by the admin team.
 
@@ -84,35 +84,36 @@ Important: Please change your password as soon as possible after your first logi
 The password is not stored in clear text on the server but people could get access to this mail
 and compromise your account.
 ";
-if (!empty($howToURL)) {
-	$body .= "
+    if (!empty($howToURL)) {
+        $body .= "
 You can find further help here::
 $howToURL\n";
-}
-	$body .= "
+    }
+    $body .= "
 Enjoy your usage of $homeserver.
 You can ask further questions inside of the chat system.
 
 The admin team of " . $homeserver;
-	return send_mail($receiver, $subject, $body);
-
+    return send_mail($receiver, $subject, $body);
 }
+
 function send_mail_registration_decline($homeserver, $user, $receiver, $reason) {
-	$subject = "Registration on $homeserver declined.";
-	$body = "Guten Tag " . $user . ",
+    $subject = "Registration on $homeserver declined.";
+    $body = "Guten Tag " . $user . ",
 
 Your registration request got declined by the admin team.\n";
 
-	if (empty($reason)) {
-		$body .= "\nThey did not provide any reason for this\n";
-	} else {
-		$body .= "\nThey provide following hint for you:\n$reason\n";
-	}
+    if (empty($reason)) {
+        $body .= "\nThey did not provide any reason for this\n";
+    } else {
+        $body .= "\nThey provide following hint for you:\n$reason\n";
+    }
 
-	$body .= "
+    $body .= "
 We hope that you can understand this reason.
 
 The admin team of " . $homeserver;
-	return send_mail($receiver, $subject, $body );
+    return send_mail($receiver, $subject, $body);
 }
+
 ?>
diff --git a/public/index.php b/public/index.php
index 32b5d5d..27c0edd 100644
--- a/public/index.php
+++ b/public/index.php
@@ -122,7 +122,7 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
 } else {
     $_SESSION["token"] = bin2hex(random_bytes(16));
     ?>
-    <title><?php echo strtr($language["TOPIC_PLEASE_REGISTER"], [ "@homeserver" => $config["homeserver"] ]); ?></title>
+    <title><?php echo strtr($language["TOPIC_PLEASE_REGISTER"], ["@homeserver" => $config["homeserver"]]); ?></title>
     <link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet">
     <style>
         body{
@@ -146,27 +146,29 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
             <div class="col-xs-12 col-sm-8 col-md-4 col-sm-offset-2 col-md-offset-4">
                 <div class="panel panel-default">
                     <div class="panel-heading">
-                        <h3 class="panel-title"><?php echo strtr($language["TOPIC_PLEASE_REGISTER"], [ "@homeserver" => $config["homeserver"] ])
-                                . "<small>" . $language["TOPIC_PLEASE_REGISTER_NOTE"] . "</small>"; ?></h3>
+                        <h3 class="panel-title"><?php
+                            echo strtr($language["TOPIC_PLEASE_REGISTER"], ["@homeserver" => $config["homeserver"]])
+                            . "<small>" . $language["TOPIC_PLEASE_REGISTER_NOTE"] . "</small>";
+                            ?></h3>
                     </div>
                     <div class="panel-body">
                         <form name="regForm" role="form" action="index.php" method="post">
-<?php if ($storeFirstLastName) { ?>
-                            <div class="row">
-                                <div class="col-xs-6 col-sm-6 col-md-6">
-                                    <div class="form-group">
-                                        <input type="text" name="first_name" id="first_name" class="form-control input-sm"
-                                               placeholder="<?php echo $language["FIRST_NAME"]; ?>" pattern="[A-Z][a-z]+">
+                            <?php if ($storeFirstLastName) { ?>
+                                <div class="row">
+                                    <div class="col-xs-6 col-sm-6 col-md-6">
+                                        <div class="form-group">
+                                            <input type="text" name="first_name" id="first_name" class="form-control input-sm"
+                                                   placeholder="<?php echo $language["FIRST_NAME"]; ?>" pattern="[A-Z][a-z]+">
+                                        </div>
+                                    </div>
+                                    <div class="col-xs-6 col-sm-6 col-md-6">
+                                        <div class="form-group">
+                                            <input type="text" name="last_name" id="last_name" class="form-control input-sm"
+                                                   placeholder="<?php echo $language["LAST_NAME"]; ?>" pattern="[A-Z][a-z]+">
+                                        </div>
                                     </div>
                                 </div>
-                                <div class="col-xs-6 col-sm-6 col-md-6">
-                                    <div class="form-group">
-                                        <input type="text" name="last_name" id="last_name" class="form-control input-sm"
-                                               placeholder="<?php echo $language["LAST_NAME"]; ?>" pattern="[A-Z][a-z]+">
-                                    </div>
-                                </div>
-                            </div>
-<?php } ?>
+                            <?php } ?>
 
                             <div class="form-group">
                                 <input type="email" name="email" id="email" class="form-control input-sm" placeholder="<?php echo $language["EMAIL_ADDRESS"]; ?>" required>
@@ -180,7 +182,7 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
                                 <input type="text" name="username" id="username" class="form-control input-sm"
                                        placeholder="<?php echo $language["USERNAME"]; ?>" pattern="[a-z1-9]{3,20}" required>
                             </div>
-<?php if ($storePassword) { ?>
+                            <?php if ($storePassword) { ?>
                                 <div class="row">
                                     <div class="col-xs-6 col-sm-6 col-md-6">
                                         <div class="form-group">
@@ -193,16 +195,18 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
                                         </div>
                                     </div>
                                 </div>
-<?php } ?>
+                            <?php } ?>
                             <input type="hidden" name="token" id="token" value="<?php echo $_SESSION["token"]; ?>">
                             <input type="submit" value="<?php echo $language["REGISTER"]; ?>" class="btn btn-info btn-block">
 
                         </form>
-                        <?php if (isset($language["NOTE_FOR_REGISTRATION"])) {
-                            echo "<p>" .  $language["NOTE"] . ": <br />";
-                            echo strtr($language["NOTE_FOR_REGISTRATION"], [ "@homeserver" => $config["homeserver"] ]);
+                        <?php
+                        if (isset($language["NOTE_FOR_REGISTRATION"])) {
+                            echo "<p>" . $language["NOTE"] . ": <br />";
+                            echo strtr($language["NOTE_FOR_REGISTRATION"], ["@homeserver" => $config["homeserver"]]);
                             echo "</p>";
-                        } ?>
+                        }
+                        ?>
                     </div>
                 </div>
             </div>
diff --git a/public/verify.php b/public/verify.php
index a383b97..7cbb2b4 100644
--- a/public/verify.php
+++ b/public/verify.php
@@ -56,16 +56,16 @@ try {
     $mxConn = new MatrixConnection($config["homeserver"], $config["access_token"]);
     $mxMsg = new MatrixMessage();
     $mxMsg->set_body(strtr($language["MSG_USER_WANTS_REGISTER"], [
-                "@name" => (strlen($first_name . $last_name) > 0 ? $first_name . " " . $last_name : $username),
-                "@note" => $note,
-                "@adminUrl" => $adminUrl
-            ]));
+        "@name" => (strlen($first_name . $last_name) > 0 ? $first_name . " " . $last_name : $username),
+        "@note" => $note,
+        "@adminUrl" => $adminUrl
+    ]));
     if (isset($language["MSG_USER_WANTS_REGISTER_FORMATTED"])) {
         $mxMsg->set_formatted_body(strtr($language["MSG_USER_WANTS_REGISTER_FORMATTED"], [
-                "@name" => (strlen($first_name . $last_name) > 0 ? $first_name . " " . $last_name : $username),
-                "@note" => $note,
-                "@adminUrl" => $adminUrl
-            ]));
+            "@name" => (strlen($first_name . $last_name) > 0 ? $first_name . " " . $last_name : $username),
+            "@note" => $note,
+            "@adminUrl" => $adminUrl
+        ]));
     }
     $mxMsg->set_type("m.text");
     $response = $mxConn->send($config["register_room"], $mxMsg);
diff --git a/public/verify_admin.php b/public/verify_admin.php
index 0b7a890..80a3253 100644
--- a/public/verify_admin.php
+++ b/public/verify_admin.php
@@ -93,7 +93,7 @@ try {
             // send registration_success
             $res = send_mail_registration_success(
                     $config["homeserver"], $first_name . " " . $last_name, $email, $username, $password, $config["howToURL"]
-                );
+            );
             if ($res) {
                 $mx_db->setRegistrationStateAdmin(RegisterState::AllDone, $token);
             } else {
@@ -154,9 +154,10 @@ try {
                         </div>
                         <div class="panel-body">
                             <form name="appForm" role="form" action="verify_admin.php" method="GET">
-<?php if (isset($config["operationMode"]) && $config["operationMode"] === "local") {
-    // this values will not be used when using the register operation type 
-    ?>
+                                <?php
+                                if (isset($config["operationMode"]) && $config["operationMode"] === "local") {
+                                    // this values will not be used when using the register operation type
+                                    ?>
                                     <div class="row">
                                         <div class="col-xs-6 col-sm-6 col-md-6">
                                             <div class="form-group">
@@ -171,7 +172,7 @@ try {
                                             </div>
                                         </div>
                                     </div>
-<?php } ?>
+                                <?php } ?>
                                 <div class="form-group">
                                     <input type="text" id="note" class="form-control input-sm" value="<?php echo $note; ?>" disabled=true>
                                 </div>