Replaced " with '

9 files changed, 191 insertions, 191 deletions

diff --git a/includes/controller/angeltypes_controller.php b/includes/controller/angeltypes_controller.php
index 12d5287a..daa754eb 100644
--- a/includes/controller/angeltypes_controller.php
+++ b/includes/controller/angeltypes_controller.php
@@ -7,7 +7,7 @@
  */
 function angeltypes_title()
 {
-    return _("Angeltypes");
+    return _('Angeltypes');
 }
 
 /**
@@ -61,7 +61,7 @@ function angeltypes_about_controller()
     }
 
     return [
-        _("Teams/Job description"),
+        _('Teams/Job description'),
         AngelTypes_about_view($angeltypes, isset($user))
     ];
 }
@@ -83,12 +83,12 @@ function angeltype_delete_controller()
 
     if (isset($_REQUEST['confirmed'])) {
         AngelType_delete($angeltype);
-        success(sprintf(_("Angeltype %s deleted."), AngelType_name_render($angeltype)));
+        success(sprintf(_('Angeltype %s deleted.'), AngelType_name_render($angeltype)));
         redirect(page_link_to('angeltypes'));
     }
 
     return [
-        sprintf(_("Delete angeltype %s"), $angeltype['name']),
+        sprintf(_('Delete angeltype %s'), $angeltype['name']),
         AngelType_delete_view($angeltype)
     ];
 }
@@ -130,7 +130,7 @@ function angeltype_edit_controller()
                 $angeltype['name'] = $result->getValue();
                 if (!$result->isValid()) {
                     $valid = false;
-                    error(_("Please check the name. Maybe it already exists."));
+                    error(_('Please check the name. Maybe it already exists.'));
                 }
             }
 
@@ -149,13 +149,13 @@ function angeltype_edit_controller()
                 $angeltype = AngelType_create($angeltype);
             }
 
-            success("Angel type saved.");
+            success('Angel type saved.');
             redirect(angeltype_link($angeltype['id']));
         }
     }
 
     return [
-        sprintf(_("Edit %s"), $angeltype['name']),
+        sprintf(_('Edit %s'), $angeltype['name']),
         AngelType_edit_view($angeltype, $supporter_mode)
     ];
 }
@@ -179,7 +179,7 @@ function angeltype_controller()
     $members = Users_by_angeltype($angeltype);
 
     return [
-        sprintf(_("Team %s"), $angeltype['name']),
+        sprintf(_('Team %s'), $angeltype['name']),
         AngelType_view(
             $angeltype,
             $members,
@@ -210,19 +210,19 @@ function angeltypes_list_controller()
 
     foreach ($angeltypes as &$angeltype) {
         $actions = [
-            button(page_link_to('angeltypes') . '&action=view&angeltype_id=' . $angeltype['id'], _("view"), "btn-xs")
+            button(page_link_to('angeltypes') . '&action=view&angeltype_id=' . $angeltype['id'], _('view'), 'btn-xs')
         ];
 
         if (in_array('admin_angel_types', $privileges)) {
             $actions[] = button(
                 page_link_to('angeltypes') . '&action=edit&angeltype_id=' . $angeltype['id'],
-                _("edit"),
-                "btn-xs"
+                _('edit'),
+                'btn-xs'
             );
             $actions[] = button(
                 page_link_to('angeltypes') . '&action=delete&angeltype_id=' . $angeltype['id'],
-                _("delete"),
-                "btn-xs"
+                _('delete'),
+                'btn-xs'
             );
         }
 
@@ -230,14 +230,14 @@ function angeltypes_list_controller()
         if ($angeltype['user_angeltype_id'] != null) {
             $actions[] = button(
                 page_link_to('user_angeltypes') . '&action=delete&user_angeltype_id=' . $angeltype['user_angeltype_id'],
-                _("leave"),
-                "btn-xs"
+                _('leave'),
+                'btn-xs'
             );
         } else {
             $actions[] = button(
                 page_link_to('user_angeltypes') . '&action=add&angeltype_id=' . $angeltype['id'],
-                _("join"),
-                "btn-xs"
+                _('join'),
+                'btn-xs'
             );
         }
 
@@ -268,7 +268,7 @@ function load_angeltype()
 
     $angeltype = AngelType($_REQUEST['angeltype_id']);
     if ($angeltype == null) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist . '));
         redirect(page_link_to('angeltypes'));
     }
 
diff --git a/includes/controller/event_config_controller.php b/includes/controller/event_config_controller.php
index 709d1b2a..06245c47 100644
--- a/includes/controller/event_config_controller.php
+++ b/includes/controller/event_config_controller.php
@@ -5,7 +5,7 @@
  */
 function event_config_title()
 {
-    return _("Event config");
+    return _('Event config');
 }
 
 /**
@@ -53,40 +53,40 @@ function event_config_edit_controller()
             $event_welcome_msg = null;
         }
 
-        $result = check_request_date('buildup_start_date', _("Please enter buildup start date."), true);
+        $result = check_request_date('buildup_start_date', _('Please enter buildup start date.'), true);
         $buildup_start_date = $result->getValue();
         $valid &= $result->isValid();
 
-        $result = check_request_date('event_start_date', _("Please enter event start date."), true);
+        $result = check_request_date('event_start_date', _('Please enter event start date.'), true);
         $event_start_date = $result->getValue();
         $valid &= $result->isValid();
 
-        $result = check_request_date('event_end_date', _("Please enter event end date."), true);
+        $result = check_request_date('event_end_date', _('Please enter event end date.'), true);
         $event_end_date = $result->getValue();
         $valid &= $result->isValid();
 
-        $result = check_request_date('teardown_end_date', _("Please enter teardown end date."), true);
+        $result = check_request_date('teardown_end_date', _('Please enter teardown end date.'), true);
         $teardown_end_date = $result->getValue();
         $valid &= $result->isValid();
 
         if ($buildup_start_date != null && $event_start_date != null && $buildup_start_date > $event_start_date) {
             $valid = false;
-            error(_("The buildup start date has to be before the event start date."));
+            error(_('The buildup start date has to be before the event start date.'));
         }
 
         if ($event_start_date != null && $event_end_date != null && $event_start_date > $event_end_date) {
             $valid = false;
-            error(_("The event start date has to be before the event end date."));
+            error(_('The event start date has to be before the event end date.'));
         }
 
         if ($event_end_date != null && $teardown_end_date != null && $event_end_date > $teardown_end_date) {
             $valid = false;
-            error(_("The event end date has to be before the teardown end date."));
+            error(_('The event end date has to be before the teardown end date.'));
         }
 
         if ($buildup_start_date != null && $teardown_end_date != null && $buildup_start_date > $teardown_end_date) {
             $valid = false;
-            error(_("The buildup start date has to be before the teardown end date."));
+            error(_('The buildup start date has to be before the teardown end date.'));
         }
 
         if ($valid) {
@@ -100,15 +100,15 @@ function event_config_edit_controller()
             );
 
             if ($result === false) {
-                engelsystem_error("Unable to update event config.");
+                engelsystem_error('Unable to update event config.');
             }
 
             engelsystem_log(
-                "Changed event config: $event_name, $event_welcome_msg, "
-                . date("Y-m-d", $buildup_start_date) . ", " . date("Y-m-d", $event_start_date) . ", "
-                . date("Y-m-d", $event_end_date) . ", " . date("Y-m-d", $teardown_end_date)
+                'Changed event config: $event_name, $event_welcome_msg, '
+                . date('Y-m-d', $buildup_start_date) . ', ' . date('Y-m-d', $event_start_date) . ', '
+                . date('Y-m-d', $event_end_date) . ', ' . date('Y-m-d', $teardown_end_date)
             );
-            success(_("Settings saved."));
+            success(_('Settings saved.'));
             redirect(page_link_to('admin_event_config'));
         }
     }
diff --git a/includes/controller/rooms_controller.php b/includes/controller/rooms_controller.php
index 9910f50c..3f5ff387 100644
--- a/includes/controller/rooms_controller.php
+++ b/includes/controller/rooms_controller.php
@@ -23,7 +23,7 @@ function room_controller()
     $all_shifts = Shifts_by_room($room);
     $days = [];
     foreach ($all_shifts as $shift) {
-        $day = date("Y-m-d", $shift['start']);
+        $day = date('Y-m-d', $shift['start']);
         if (!in_array($day, $days)) {
             $days[] = $day;
         }
@@ -34,15 +34,15 @@ function room_controller()
         [$room['RID']],
         AngelType_ids()
     );
-    $selected_day = date("Y-m-d");
+    $selected_day = date('Y-m-d');
     if (!empty($days)) {
         $selected_day = $days[0];
     }
     if (isset($_REQUEST['shifts_filter_day'])) {
         $selected_day = $_REQUEST['shifts_filter_day'];
     }
-    $shiftsFilter->setStartTime(parse_date("Y-m-d H:i", $selected_day . ' 00:00'));
-    $shiftsFilter->setEndTime(parse_date("Y-m-d H:i", $selected_day . ' 23:59'));
+    $shiftsFilter->setStartTime(parse_date('Y-m-d H:i', $selected_day . ' 00:00'));
+    $shiftsFilter->setEndTime(parse_date('Y-m-d H:i', $selected_day . ' 23:59'));
 
     $shiftsFilterRenderer = new ShiftsFilterRenderer($shiftsFilter);
     $shiftsFilterRenderer->enableDaySelection($days);
diff --git a/includes/controller/shift_entries_controller.php b/includes/controller/shift_entries_controller.php
index 05491ee9..8cec5f10 100644
--- a/includes/controller/shift_entries_controller.php
+++ b/includes/controller/shift_entries_controller.php
@@ -10,14 +10,14 @@ function shift_entry_add_controller()
     global $privileges, $user;
 
     $shift_id = 0;
-    if (isset($_REQUEST['shift_id']) && preg_match("/^[0-9]*$/", $_REQUEST['shift_id'])) {
+    if (isset($_REQUEST['shift_id']) && preg_match('/^[0-9]*$/', $_REQUEST['shift_id'])) {
         $shift_id = $_REQUEST['shift_id'];
     } else {
         redirect(page_link_to('user_shifts'));
     }
 
     // Locations laden
-    $rooms = sql_select("SELECT * FROM `Room` WHERE `show`='Y' ORDER BY `Name`");
+    $rooms = sql_select('SELECT * FROM `Room` WHERE `show`=\'Y\' ORDER BY `Name`');
     $room_array = [];
     foreach ($rooms as $room) {
         $room_array[$room['RID']] = $room['Name'];
@@ -30,7 +30,7 @@ function shift_entry_add_controller()
     }
 
     $type_id = 0;
-    if (isset($_REQUEST['type_id']) && preg_match("/^[0-9]*$/", $_REQUEST['type_id'])) {
+    if (isset($_REQUEST['type_id']) && preg_match('/^[0-9]*$/', $_REQUEST['type_id'])) {
         $type_id = $_REQUEST['type_id'];
     } else {
         redirect(page_link_to('user_shifts'));
@@ -60,7 +60,7 @@ function shift_entry_add_controller()
 
     if (
         isset($_REQUEST['user_id'])
-        && preg_match("/^[0-9]*$/", $_REQUEST['user_id'])
+        && preg_match('/^[0-9]*$/', $_REQUEST['user_id'])
         && (
             in_array('user_shifts_admin', $privileges)
             || in_array('shiftentry_edit_angeltype_supporter', $privileges)
@@ -84,7 +84,7 @@ function shift_entry_add_controller()
         $shift_entries
     );
     if (!$shift_signup_allowed->isSignupAllowed()) {
-        error(_("You are not allowed to sign up for this shift. Maybe shift is full or already running."));
+        error(_('You are not allowed to sign up for this shift. Maybe shift is full or already running.'));
         redirect(shift_link($shift));
     }
 
@@ -143,26 +143,26 @@ function shift_entry_add_controller()
         }
 
         $user_source = User($user_id);
-        engelsystem_log("User " . User_Nick_render($user_source) . " signed up for shift " . $shift['name'] . " from " . date("Y-m-d H:i",
-                $shift['start']) . " to " . date("Y-m-d H:i", $shift['end']));
-        success(_("You are subscribed. Thank you!") . ' <a href="' . page_link_to('user_myshifts') . '">' . _("My shifts") . ' &raquo;</a>');
+        engelsystem_log('User ' . User_Nick_render($user_source) . ' signed up for shift ' . $shift['name'] . ' from ' . date('Y-m-d H:i',
+                $shift['start']) . ' to ' . date('Y-m-d H:i', $shift['end']));
+        success(_('You are subscribed. Thank you!') . ' <a href="' . page_link_to('user_myshifts') . '">' . _('My shifts') . ' &raquo;</a>');
         redirect(shift_link($shift));
     }
 
     $angeltype_select = '';
     if (in_array('user_shifts_admin', $privileges)) {
-        $users = sql_select("
+        $users = sql_select('
             SELECT *, (SELECT count(*) FROM `ShiftEntry` WHERE `freeloaded`=1 AND `ShiftEntry`.`UID`=`User`.`UID`) AS `freeloaded`
             FROM `User`
             ORDER BY `Nick`
-        ");
+        ');
         $users_select = [];
         foreach ($users as $usr) {
-            $users_select[$usr['UID']] = $usr['Nick'] . ($usr['freeloaded'] == 0 ? "" : " (" . _("Freeloader") . ")");
+            $users_select[$usr['UID']] = $usr['Nick'] . ($usr['freeloaded'] == 0 ? '' : ' (' . _('Freeloader') . ')');
         }
         $user_text = html_select_key('user_id', 'user_id', $users_select, $user['UID']);
 
-        $angeltypes_source = sql_select("SELECT * FROM `AngelTypes` ORDER BY `name`");
+        $angeltypes_source = sql_select('SELECT * FROM `AngelTypes` ORDER BY `name`');
         $angeltypes = [];
         foreach ($angeltypes_source as $angeltype) {
             $angeltypes[$angeltype['id']] = $angeltype['name'];
@@ -193,13 +193,13 @@ function shift_entry_add_controller()
 
     return ShiftEntry_edit_view(
         $user_text,
-        date("Y-m-d H:i", $shift['start'])
+        date('Y-m-d H:i', $shift['start'])
         . ' &ndash; '
         . date('Y-m-d H:i', $shift['end'])
         . ' (' . shift_length($shift) . ')',
         $shift['Name'],
         $shift['name'],
-        $angeltype_select, "",
+        $angeltype_select, '',
         false,
         null,
         in_array('user_shifts_admin', $privileges)
@@ -250,15 +250,15 @@ function shift_entry_delete_controller()
         }
 
         engelsystem_log(
-            "Deleted " . User_Nick_render($shift_entry_source) . "'s shift: " . $shift_entry_source['name']
-            . " at " . $shift_entry_source['Name']
-            . " from " . date("Y-m-d H:i", $shift_entry_source['start'])
-            . " to " . date("Y-m-d H:i", $shift_entry_source['end'])
-            . " as " . $shift_entry_source['angel_type']
+            'Deleted ' . User_Nick_render($shift_entry_source) . '\'s shift: ' . $shift_entry_source['name']
+            . ' at ' . $shift_entry_source['Name']
+            . ' from ' . date('Y-m-d H:i', $shift_entry_source['start'])
+            . ' to ' . date('Y-m-d H:i', $shift_entry_source['end'])
+            . ' as ' . $shift_entry_source['angel_type']
         );
-        success(_("Shift entry deleted."));
+        success(_('Shift entry deleted.'));
     } else {
-        error(_("Entry not found."));
+        error(_('Entry not found.'));
     }
 
     redirect(shift_link($shift_entry_source));
diff --git a/includes/controller/shifts_controller.php b/includes/controller/shifts_controller.php
index a9f4ec28..56ee1452 100644
--- a/includes/controller/shifts_controller.php
+++ b/includes/controller/shifts_controller.php
@@ -38,7 +38,7 @@ function shift_edit_controller()
     global $privileges;
 
     // Schicht bearbeiten
-    $msg = "";
+    $msg = '';
     $valid = true;
 
     if (!in_array('admin_shifts', $privileges)) {
@@ -74,11 +74,11 @@ function shift_edit_controller()
         $title = strip_request_item('title');
 
         // Auswahl der sichtbaren Locations für die Schichten
-        if (isset($_REQUEST['rid']) && preg_match("/^[0-9]+$/", $_REQUEST['rid']) && isset($room[$_REQUEST['rid']])) {
+        if (isset($_REQUEST['rid']) && preg_match('/^[0-9]+$/', $_REQUEST['rid']) && isset($room[$_REQUEST['rid']])) {
             $rid = $_REQUEST['rid'];
         } else {
             $valid = false;
-            $msg .= error(_("Please select a room."), true);
+            $msg .= error(_('Please select a room.'), true);
         }
 
         if (isset($_REQUEST['shifttype_id']) && isset($shifttypes[$_REQUEST['shifttype_id']])) {
@@ -88,23 +88,23 @@ function shift_edit_controller()
             $msg .= error(_('Please select a shifttype.'), true);
         }
 
-        if (isset($_REQUEST['start']) && $tmp = parse_date("Y-m-d H:i", $_REQUEST['start'])) {
+        if (isset($_REQUEST['start']) && $tmp = parse_date('Y-m-d H:i', $_REQUEST['start'])) {
             $start = $tmp;
         } else {
             $valid = false;
-            $msg .= error(_("Please enter a valid starting time for the shifts."), true);
+            $msg .= error(_('Please enter a valid starting time for the shifts.'), true);
         }
 
-        if (isset($_REQUEST['end']) && $tmp = parse_date("Y-m-d H:i", $_REQUEST['end'])) {
+        if (isset($_REQUEST['end']) && $tmp = parse_date('Y-m-d H:i', $_REQUEST['end'])) {
             $end = $tmp;
         } else {
             $valid = false;
-            $msg .= error(_("Please enter a valid ending time for the shifts."), true);
+            $msg .= error(_('Please enter a valid ending time for the shifts.'), true);
         }
 
         if ($start >= $end) {
             $valid = false;
-            $msg .= error(_("The ending time has to be after the starting time."), true);
+            $msg .= error(_('The ending time has to be after the starting time.'), true);
         }
 
         foreach ($needed_angel_types as $needed_angeltype_id => $needed_angeltype_name) {
@@ -113,7 +113,7 @@ function shift_edit_controller()
             } else {
                 $valid = false;
                 $msg .= error(sprintf(
-                    _("Please check your input for needed angels of type %s."),
+                    _('Please check your input for needed angels of type %s.'),
                     $needed_angeltype_name
                 ), true);
             }
@@ -134,16 +134,16 @@ function shift_edit_controller()
             $needed_angel_types_info = [];
             foreach ($needed_angel_types as $type_id => $count) {
                 NeededAngelType_add($shift_id, $type_id, null, $count);
-                $needed_angel_types_info[] = $angeltypes[$type_id] . ": " . $count;
+                $needed_angel_types_info[] = $angeltypes[$type_id] . ': ' . $count;
             }
 
             engelsystem_log(
-                "Updated shift '" . $shifttypes[$shifttype_id] . ", " . $title
-                . "' from " . date("Y-m-d H:i", $start)
-                . " to " . date("Y-m-d H:i", $end)
-                . " with angel types " . join(", ", $needed_angel_types_info)
+                'Updated shift \'' . $shifttypes[$shifttype_id] . ', ' . $title
+                . '\' from ' . date('Y-m-d H:i', $start)
+                . ' to ' . date('Y-m-d H:i', $end)
+                . ' with angel types ' . join(', ', $needed_angel_types_info)
             );
-            success(_("Shift updated."));
+            success(_('Shift updated.'));
 
             redirect(shift_link([
                 'SID' => $shift_id
@@ -151,7 +151,7 @@ function shift_edit_controller()
         }
     }
 
-    $angel_types_spinner = "";
+    $angel_types_spinner = '';
     foreach ($angeltypes as $angeltype_id => $angeltype_name) {
         $angel_types_spinner .= form_spinner('type_' . $angeltype_id, $angeltype_name,
             $needed_angel_types[$angeltype_id]);
@@ -161,16 +161,16 @@ function shift_edit_controller()
         shifts_title(),
         [
             msg(),
-            '<noscript>' . info(_("This page is much more comfortable with javascript."), true) . '</noscript>',
+            '<noscript>' . info(_('This page is much more comfortable with javascript.'), true) . '</noscript>',
             form([
                 form_select('shifttype_id', _('Shifttype'), $shifttypes, $shifttype_id),
-                form_text('title', _("Title"), $title),
-                form_select('rid', _("Room:"), $room, $rid),
-                form_text('start', _("Start:"), date("Y-m-d H:i", $start)),
-                form_text('end', _("End:"), date("Y-m-d H:i", $end)),
-                '<h2>' . _("Needed angels") . '</h2>',
+                form_text('title', _('Title'), $title),
+                form_select('rid', _('Room:'), $room, $rid),
+                form_text('start', _('Start:'), date('Y-m-d H:i', $start)),
+                form_text('end', _('End:'), date('Y-m-d H:i', $end)),
+                '<h2>' . _('Needed angels') . '</h2>',
                 $angel_types_spinner,
-                form_submit('submit', _("Save"))
+                form_submit('submit', _('Save'))
             ])
         ]
     );
@@ -188,7 +188,7 @@ function shift_delete_controller()
     }
 
     // Schicht komplett löschen (nur für admins/user mit user_shifts_admin privileg)
-    if (!isset($_REQUEST['delete_shift']) || !preg_match("/^[0-9]*$/", $_REQUEST['delete_shift'])) {
+    if (!isset($_REQUEST['delete_shift']) || !preg_match('/^[0-9]*$/', $_REQUEST['delete_shift'])) {
         redirect(page_link_to('user_shifts'));
     }
     $shift_id = $_REQUEST['delete_shift'];
@@ -203,22 +203,22 @@ function shift_delete_controller()
         Shift_delete($shift_id);
 
         engelsystem_log(
-            "Deleted shift " . $shift['name']
-            . " from " . date("Y-m-d H:i", $shift['start'])
-            . " to " . date("Y-m-d H:i", $shift['end'])
+            'Deleted shift ' . $shift['name']
+            . ' from ' . date('Y-m-d H:i', $shift['start'])
+            . ' to ' . date('Y-m-d H:i', $shift['end'])
         );
-        success(_("Shift deleted."));
+        success(_('Shift deleted.'));
         redirect(page_link_to('user_shifts'));
     }
 
     return page_with_title(shifts_title(), [
         error(sprintf(
-            _("Do you want to delete the shift %s from %s to %s?"),
+            _('Do you want to delete the shift %s from %s to %s?'),
             $shift['name'],
-            date("Y-m-d H:i", $shift['start']),
-            date("H:i", $shift['end'])
+            date('Y-m-d H:i', $shift['start']),
+            date('H:i', $shift['end'])
         ), true),
-        '<a class="button" href="?p=user_shifts&delete_shift=' . $shift_id . '&delete">' . _("delete") . '</a>'
+        '<a class="button" href="?p=user_shifts&delete_shift=' . $shift_id . '&delete">' . _('delete') . '</a>'
     ]);
 }
 
@@ -239,7 +239,7 @@ function shift_controller()
 
     $shift = Shift($_REQUEST['shift_id']);
     if ($shift == null) {
-        error(_("Shift could not be found."));
+        error(_('Shift could not be found.'));
         redirect(page_link_to('user_shifts'));
     }
 
@@ -323,24 +323,24 @@ function shifts_json_export_all_controller()
 {
     global $api_key;
 
-    if ($api_key == "") {
-        engelsystem_error("Config contains empty apikey.");
+    if ($api_key == '') {
+        engelsystem_error('Config contains empty apikey.');
     }
 
     if (!isset($_REQUEST['api_key'])) {
-        engelsystem_error("Missing parameter api_key.");
+        engelsystem_error('Missing parameter api_key.');
     }
 
     if ($_REQUEST['api_key'] != $api_key) {
-        engelsystem_error("Invalid api_key.");
+        engelsystem_error('Invalid api_key.');
     }
 
     $shifts_source = Shifts();
     if ($shifts_source === false) {
-        engelsystem_error("Unable to load shifts.");
+        engelsystem_error('Unable to load shifts.');
     }
 
-    header("Content-Type: application/json; charset=utf-8");
+    header('Content-Type: application/json; charset=utf-8');
     raw_output(json_encode($shifts_source));
 }
 
@@ -352,23 +352,23 @@ function shifts_json_export_controller()
 {
     global $user;
 
-    if (!isset($_REQUEST['key']) || !preg_match("/^[0-9a-f]{32}$/", $_REQUEST['key'])) {
-        engelsystem_error("Missing key.");
+    if (!isset($_REQUEST['key']) || !preg_match('/^[0-9a-f]{32}$/', $_REQUEST['key'])) {
+        engelsystem_error('Missing key.');
     }
 
     $key = $_REQUEST['key'];
 
     $user = User_by_api_key($key);
     if ($user == null) {
-        engelsystem_error("Key invalid.");
+        engelsystem_error('Key invalid.');
     }
     if (!in_array('shifts_json_export', privileges_for_user($user['UID']))) {
-        engelsystem_error("No privilege for shifts_json_export.");
+        engelsystem_error('No privilege for shifts_json_export.');
     }
 
     $shifts = load_ical_shifts();
 
-    header("Content-Type: application/json; charset=utf-8");
+    header('Content-Type: application/json; charset=utf-8');
     raw_output(json_encode($shifts));
 }
 
diff --git a/includes/controller/shifttypes_controller.php b/includes/controller/shifttypes_controller.php
index 08576641..55bea389 100644
--- a/includes/controller/shifttypes_controller.php
+++ b/includes/controller/shifttypes_controller.php
@@ -41,7 +41,7 @@ function shifttype_delete_controller()
     }
 
     return [
-        sprintf(_("Delete shifttype %s"), $shifttype['name']),
+        sprintf(_('Delete shifttype %s'), $shifttype['name']),
         ShiftType_delete_view($shifttype)
     ];
 }
@@ -54,9 +54,9 @@ function shifttype_delete_controller()
 function shifttype_edit_controller()
 {
     $shifttype_id = null;
-    $name = "";
+    $name = '';
     $angeltype_id = null;
-    $description = "";
+    $description = '';
 
     $angeltypes = AngelTypes();
 
@@ -85,7 +85,7 @@ function shifttype_edit_controller()
             error(_('Please enter a name.'));
         }
 
-        if (isset($_REQUEST['angeltype_id']) && preg_match("/^[0-9]+$/", $_REQUEST['angeltype_id'])) {
+        if (isset($_REQUEST['angeltype_id']) && preg_match('/^[0-9]+$/', $_REQUEST['angeltype_id'])) {
             $angeltype_id = $_REQUEST['angeltype_id'];
         } else {
             $angeltype_id = null;
@@ -157,7 +157,7 @@ function shifttypes_list_controller()
 {
     $shifttypes = ShiftTypes();
     if ($shifttypes === false) {
-        engelsystem_error("Unable to load shifttypes.");
+        engelsystem_error('Unable to load shifttypes.');
     }
 
     return [
@@ -173,7 +173,7 @@ function shifttypes_list_controller()
  */
 function shifttypes_title()
 {
-    return _("Shifttypes");
+    return _('Shifttypes');
 }
 
 /**
diff --git a/includes/controller/user_angeltypes_controller.php b/includes/controller/user_angeltypes_controller.php
index 3a316ee1..0855e4c9 100644
--- a/includes/controller/user_angeltypes_controller.php
+++ b/includes/controller/user_angeltypes_controller.php
@@ -24,9 +24,9 @@ function user_angeltypes_unconfirmed_hint()
             . '</a>';
     }
 
-    return sprintf(ngettext("There is %d unconfirmed angeltype.", "There are %d unconfirmed angeltypes.",
+    return sprintf(ngettext('There is %d unconfirmed angeltype.', 'There are %d unconfirmed angeltypes.',
             count($unconfirmed_user_angeltypes)),
-            count($unconfirmed_user_angeltypes)) . " " . _('Angel types which need approvals:') . ' ' . join(', ',
+            count($unconfirmed_user_angeltypes)) . ' ' . _('Angel types which need approvals:') . ' ' . join(', ',
             $unconfirmed_links);
 }
 
@@ -40,31 +40,31 @@ function user_angeltypes_delete_all_controller()
     global $user;
 
     if (!isset($_REQUEST['angeltype_id'])) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $angeltype = AngelType($_REQUEST['angeltype_id']);
     if ($angeltype == null) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (!User_is_AngelType_supporter($user, $angeltype)) {
-        error(_("You are not allowed to delete all users for this angeltype."));
+        error(_('You are not allowed to delete all users for this angeltype.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (isset($_REQUEST['confirmed'])) {
         UserAngelTypes_delete_all($angeltype['id']);
 
-        engelsystem_log(sprintf("Denied all users for angeltype %s", AngelType_name_render($angeltype)));
-        success(sprintf(_("Denied all users for angeltype %s."), AngelType_name_render($angeltype)));
+        engelsystem_log(sprintf('Denied all users for angeltype %s', AngelType_name_render($angeltype)));
+        success(sprintf(_('Denied all users for angeltype %s.'), AngelType_name_render($angeltype)));
         redirect(page_link_to('angeltypes') . '&action=view&angeltype_id=' . $angeltype['id']);
     }
 
     return [
-        _("Deny all users"),
+        _('Deny all users'),
         UserAngelTypes_delete_all_view($angeltype)
     ];
 }
@@ -79,37 +79,37 @@ function user_angeltypes_confirm_all_controller()
     global $user, $privileges;
 
     if (!isset($_REQUEST['angeltype_id'])) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $angeltype = AngelType($_REQUEST['angeltype_id']);
     if ($angeltype == null) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_angeltype = UserAngelType_by_User_and_AngelType($user, $angeltype);
     if ($user_angeltype == null) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (!in_array('admin_user_angeltypes', $privileges) && !$user_angeltype['supporter']) {
-        error(_("You are not allowed to confirm all users for this angeltype."));
+        error(_('You are not allowed to confirm all users for this angeltype.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (isset($_REQUEST['confirmed'])) {
         UserAngelTypes_confirm_all($angeltype['id'], $user);
 
-        engelsystem_log(sprintf("Confirmed all users for angeltype %s", AngelType_name_render($angeltype)));
-        success(sprintf(_("Confirmed all users for angeltype %s."), AngelType_name_render($angeltype)));
+        engelsystem_log(sprintf('Confirmed all users for angeltype %s', AngelType_name_render($angeltype)));
+        success(sprintf(_('Confirmed all users for angeltype %s.'), AngelType_name_render($angeltype)));
         redirect(page_link_to('angeltypes') . '&action=view&angeltype_id=' . $angeltype['id']);
     }
 
     return [
-        _("Confirm all users"),
+        _('Confirm all users'),
         UserAngelTypes_confirm_all_view($angeltype)
     ];
 }
@@ -124,46 +124,46 @@ function user_angeltype_confirm_controller()
     global $user;
 
     if (!isset($_REQUEST['user_angeltype_id'])) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_angeltype = UserAngelType($_REQUEST['user_angeltype_id']);
     if ($user_angeltype == null) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $angeltype = AngelType($user_angeltype['angeltype_id']);
     if ($angeltype == null) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (!User_is_AngelType_supporter($user, $angeltype)) {
-        error(_("You are not allowed to confirm this users angeltype."));
+        error(_('You are not allowed to confirm this users angeltype.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_source = User($user_angeltype['user_id']);
     if ($user_source == null) {
-        error(_("User doesn't exist."));
+        error(_('User doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (isset($_REQUEST['confirmed'])) {
         $result = UserAngelType_confirm($user_angeltype['id'], $user);
         if ($result === false) {
-            engelsystem_error("Unable to confirm user angeltype.");
+            engelsystem_error('Unable to confirm user angeltype.');
         }
 
         engelsystem_log(sprintf(
-            "%s confirmed for angeltype %s",
+            '%s confirmed for angeltype %s',
             User_Nick_render($user_source),
             AngelType_name_render($angeltype)
         ));
         success(sprintf(
-            _("%s confirmed for angeltype %s."),
+            _('%s confirmed for angeltype %s.'),
             User_Nick_render($user_source),
             AngelType_name_render($angeltype)
         ));
@@ -171,7 +171,7 @@ function user_angeltype_confirm_controller()
     }
 
     return [
-        _("Confirm angeltype for user"),
+        _('Confirm angeltype for user'),
         UserAngelType_confirm_view($user_angeltype, $user_source, $angeltype)
     ];
 }
@@ -186,40 +186,40 @@ function user_angeltype_delete_controller()
     global $user;
 
     if (!isset($_REQUEST['user_angeltype_id'])) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_angeltype = UserAngelType($_REQUEST['user_angeltype_id']);
     if ($user_angeltype == null) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $angeltype = AngelType($user_angeltype['angeltype_id']);
     if ($angeltype == null) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_source = User($user_angeltype['user_id']);
     if ($user_source == null) {
-        error(_("User doesn't exist."));
+        error(_('User doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if ($user['UID'] != $user_angeltype['user_id'] && !User_is_AngelType_supporter($user, $angeltype)) {
-        error(_("You are not allowed to delete this users angeltype."));
+        error(_('You are not allowed to delete this users angeltype.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (isset($_REQUEST['confirmed'])) {
         $result = UserAngelType_delete($user_angeltype);
         if ($result === false) {
-            engelsystem_error("Unable to delete user angeltype.");
+            engelsystem_error('Unable to delete user angeltype.');
         }
 
-        $success_message = sprintf(_("User %s removed from %s."), User_Nick_render($user_source), $angeltype['name']);
+        $success_message = sprintf(_('User %s removed from %s.'), User_Nick_render($user_source), $angeltype['name']);
         engelsystem_log($success_message);
         success($success_message);
 
@@ -227,7 +227,7 @@ function user_angeltype_delete_controller()
     }
 
     return [
-        _("Remove angeltype"),
+        _('Remove angeltype'),
         UserAngelType_delete_view($user_angeltype, $user_source, $angeltype)
     ];
 }
@@ -243,37 +243,37 @@ function user_angeltype_update_controller()
     $supporter = false;
 
     if (!in_array('admin_angel_types', $privileges)) {
-        error(_("You are not allowed to set supporter rights."));
+        error(_('You are not allowed to set supporter rights.'));
         redirect(page_link_to('angeltypes'));
     }
 
     if (!isset($_REQUEST['user_angeltype_id'])) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
-    if (isset($_REQUEST['supporter']) && preg_match("/^[01]$/", $_REQUEST['supporter'])) {
-        $supporter = $_REQUEST['supporter'] == "1";
+    if (isset($_REQUEST['supporter']) && preg_match('/^[01]$/', $_REQUEST['supporter'])) {
+        $supporter = $_REQUEST['supporter'] == '1';
     } else {
-        error(_("No supporter update given."));
+        error(_('No supporter update given.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_angeltype = UserAngelType($_REQUEST['user_angeltype_id']);
     if ($user_angeltype == null) {
-        error(_("User angeltype doesn't exist."));
+        error(_('User angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $angeltype = AngelType($user_angeltype['angeltype_id']);
     if ($angeltype == null) {
-        error(_("Angeltype doesn't exist."));
+        error(_('Angeltype doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
     $user_source = User($user_angeltype['user_id']);
     if ($user_source == null) {
-        error(_("User doesn't exist."));
+        error(_('User doesn\'t exist.'));
         redirect(page_link_to('angeltypes'));
     }
 
@@ -281,7 +281,7 @@ function user_angeltype_update_controller()
         UserAngelType_update($user_angeltype['id'], $supporter);
 
         $success_message = sprintf(
-            $supporter ? _("Added supporter rights for %s to %s.") : _("Removed supporter rights for %s from %s."),
+            $supporter ? _('Added supporter rights for %s to %s.') : _('Removed supporter rights for %s from %s.'),
             AngelType_name_render($angeltype),
             User_Nick_render($user_source)
         );
@@ -292,7 +292,7 @@ function user_angeltype_update_controller()
     }
 
     return [
-        $supporter ? _("Add supporter rights") : _("Remove supporter rights"),
+        $supporter ? _('Add supporter rights') : _('Remove supporter rights'),
         UserAngelType_update_view($user_angeltype, $user_source, $angeltype, $supporter)
     ];
 }
@@ -326,19 +326,19 @@ function user_angeltype_add_controller()
             $user_angeltype_id = UserAngelType_create($user_source, $angeltype);
 
             engelsystem_log(sprintf(
-                "User %s added to %s.",
+                'User %s added to %s.',
                 User_Nick_render($user_source),
                 AngelType_name_render($angeltype)
             ));
             success(sprintf(
-                _("User %s added to %s."),
+                _('User %s added to %s.'),
                 User_Nick_render($user_source),
                 AngelType_name_render($angeltype)
             ));
 
             UserAngelType_confirm($user_angeltype_id, $user_source);
             engelsystem_log(sprintf(
-                "User %s confirmed as %s.",
+                'User %s confirmed as %s.',
                 User_Nick_render($user),
                 AngelType_name_render($angeltype)
             ));
@@ -348,7 +348,7 @@ function user_angeltype_add_controller()
     }
 
     return [
-        _("Add user to angeltype"),
+        _('Add user to angeltype'),
         UserAngelType_add_view($angeltype, $users_source, $user_source['UID'])
     ];
 }
@@ -365,21 +365,21 @@ function user_angeltype_join_controller($angeltype)
 
     $user_angeltype = UserAngelType_by_User_and_AngelType($user, $angeltype);
     if ($user_angeltype != null) {
-        error(sprintf(_("You are already a %s."), $angeltype['name']));
+        error(sprintf(_('You are already a %s.'), $angeltype['name']));
         redirect(page_link_to('angeltypes'));
     }
 
     if (isset($_REQUEST['confirmed'])) {
         $user_angeltype_id = UserAngelType_create($user, $angeltype);
 
-        $success_message = sprintf(_("You joined %s."), $angeltype['name']);
-        engelsystem_log(sprintf("User %s joined %s.", User_Nick_render($user), AngelType_name_render($angeltype)));
+        $success_message = sprintf(_('You joined %s.'), $angeltype['name']);
+        engelsystem_log(sprintf('User %s joined %s.', User_Nick_render($user), AngelType_name_render($angeltype)));
         success($success_message);
 
         if (in_array('admin_user_angeltypes', $privileges)) {
             UserAngelType_confirm($user_angeltype_id, $user);
             engelsystem_log(sprintf(
-                "User %s confirmed as %s.",
+                'User %s confirmed as %s.',
                 User_Nick_render($user),
                 AngelType_name_render($angeltype)
             ));
@@ -389,7 +389,7 @@ function user_angeltype_join_controller($angeltype)
     }
 
     return [
-        sprintf(_("Become a %s"), $angeltype['name']),
+        sprintf(_('Become a %s'), $angeltype['name']),
         UserAngelType_join_view($user, $angeltype)
     ];
 }
diff --git a/includes/controller/user_driver_licenses_controller.php b/includes/controller/user_driver_licenses_controller.php
index f2a1c521..9562cfe0 100644
--- a/includes/controller/user_driver_licenses_controller.php
+++ b/includes/controller/user_driver_licenses_controller.php
@@ -21,8 +21,8 @@ function user_driver_license_required_hint()
     foreach ($angeltypes as $angeltype) {
         if ($angeltype['requires_driver_license']) {
             return sprintf(
-                _("You joined an angeltype which requires a driving license. Please edit your driving license information here: %s."),
-                '<a href="' . user_driver_license_edit_link() . '">' . _("driving license information") . '</a>'
+                _('You joined an angeltype which requires a driving license. Please edit your driving license information here: %s.'),
+                '<a href="' . user_driver_license_edit_link() . '">' . _('driving license information') . '</a>'
             );
         }
     }
@@ -127,22 +127,22 @@ function user_driver_license_edit_controller()
                 } else {
                     UserDriverLicenses_update($user_driver_license);
                 }
-                engelsystem_log("Driver license information updated.");
-                success(_("Your driver license information has been saved."));
+                engelsystem_log('Driver license information updated.');
+                success(_('Your driver license information has been saved.'));
                 redirect(user_link($user_source));
             } else {
-                error(_("Please select at least one driving license."));
+                error(_('Please select at least one driving license.'));
             }
         } elseif ($user_driver_license['id'] != null) {
             UserDriverLicenses_delete($user_source['UID']);
-            engelsystem_log("Driver license information removed.");
-            success(_("Your driver license information has been removed."));
+            engelsystem_log('Driver license information removed.');
+            success(_('Your driver license information has been removed.'));
             redirect(user_link($user_source));
         }
     }
 
     return [
-        sprintf(_("Edit %s driving license information"), $user_source['Nick']),
+        sprintf(_('Edit %s driving license information'), $user_source['Nick']),
         UserDriverLicense_edit_view($user_source, $wants_to_drive, $user_driver_license)
     ];
 }
diff --git a/includes/controller/users_controller.php b/includes/controller/users_controller.php
index a9f7dd61..72bddd14 100644
--- a/includes/controller/users_controller.php
+++ b/includes/controller/users_controller.php
@@ -53,7 +53,7 @@ function user_delete_controller()
 
     // You cannot delete yourself
     if ($user['UID'] == $user_source['UID']) {
-        error(_("You cannot delete yourself."));
+        error(_('You cannot delete yourself.'));
         redirect(user_link($user));
     }
 
@@ -64,7 +64,7 @@ function user_delete_controller()
                 $user['UID']))
         ) {
             $valid = false;
-            error(_("Your password is incorrect.  Please try it again."));
+            error(_('Your password is incorrect.  Please try it again.'));
         }
 
         if ($valid) {
@@ -74,15 +74,15 @@ function user_delete_controller()
             }
 
             mail_user_delete($user_source);
-            success(_("User deleted."));
-            engelsystem_log(sprintf("Deleted %s", User_Nick_render($user_source)));
+            success(_('User deleted.'));
+            engelsystem_log(sprintf('Deleted %s', User_Nick_render($user_source)));
 
             redirect(users_link());
         }
     }
 
     return [
-        sprintf(_("Delete %s"), $user_source['Nick']),
+        sprintf(_('Delete %s'), $user_source['Nick']),
         User_delete_view($user_source)
     ];
 }
@@ -147,7 +147,7 @@ function user_edit_vouchers_controller()
             $vouchers = trim($_REQUEST['vouchers']);
         } else {
             $valid = false;
-            error(_("Please enter a valid number of vouchers."));
+            error(_('Please enter a valid number of vouchers.'));
         }
 
         if ($valid) {
@@ -158,8 +158,8 @@ function user_edit_vouchers_controller()
                 engelsystem_error('Unable to update user.');
             }
 
-            success(_("Saved the number of vouchers."));
-            engelsystem_log(User_Nick_render($user_source) . ': ' . sprintf("Got %s vouchers",
+            success(_('Saved the number of vouchers.'));
+            engelsystem_log(User_Nick_render($user_source) . ': ' . sprintf('Got %s vouchers',
                     $user_source['got_voucher']));
 
             redirect(user_link($user_source));
@@ -167,7 +167,7 @@ function user_edit_vouchers_controller()
     }
 
     return [
-        sprintf(_("%s's vouchers"), $user_source['Nick']),
+        sprintf(_('%s\'s vouchers'), $user_source['Nick']),
         User_edit_vouchers_view($user_source)
     ];
 }
@@ -183,12 +183,12 @@ function user_controller()
     if (isset($_REQUEST['user_id'])) {
         $user_source = User($_REQUEST['user_id']);
         if ($user_source == null) {
-            error(_("User not found."));
+            error(_('User not found.'));
             redirect('?');
         }
     }
 
-    $shifts = Shifts_by_user($user_source, in_array("user_shifts_admin", $privileges));
+    $shifts = Shifts_by_user($user_source, in_array('user_shifts_admin', $privileges));
     foreach ($shifts as &$shift) {
         // TODO: Move queries to model
         $shift['needed_angeltypes'] = sql_select("
@@ -208,7 +208,7 @@ function user_controller()
         }
     }
 
-    if ($user_source['api_key'] == "") {
+    if ($user_source['api_key'] == '') {
         User_reset_api_key($user_source, false);
     }
 
@@ -278,7 +278,7 @@ function user_password_recovery_set_new_controller()
     global $min_password_length;
     $user_source = User_by_password_recovery_token($_REQUEST['token']);
     if ($user_source == null) {
-        error(_("Token is not correct."));
+        error(_('Token is not correct.'));
         redirect(page_link_to('login'));
     }
 
@@ -288,16 +288,16 @@ function user_password_recovery_set_new_controller()
         if (isset($_REQUEST['password']) && strlen($_REQUEST['password']) >= $min_password_length) {
             if ($_REQUEST['password'] != $_REQUEST['password2']) {
                 $valid = false;
-                error(_("Your passwords don't match."));
+                error(_('Your passwords don\'t match.'));
             }
         } else {
             $valid = false;
-            error(_("Your password is to short (please use at least 6 characters)."));
+            error(_('Your password is to short (please use at least 6 characters).'));
         }
 
         if ($valid) {
             set_password($user_source['UID'], $_REQUEST['password']);
-            success(_("Password saved."));
+            success(_('Password saved.'));
             redirect(page_link_to('login'));
         }
     }
@@ -321,28 +321,28 @@ function user_password_recovery_start_controller()
                 $user_source = User_by_email($email);
                 if ($user_source == null) {
                     $valid = false;
-                    error(_("E-mail address is not correct."));
+                    error(_('E-mail address is not correct.'));
                 }
             } else {
                 $valid = false;
-                error(_("E-mail address is not correct."));
+                error(_('E-mail address is not correct.'));
             }
         } else {
             $valid = false;
-            error(_("Please enter your e-mail."));
+            error(_('Please enter your e-mail.'));
         }
 
         if ($valid) {
             $token = User_generate_password_recovery_token($user_source);
             engelsystem_email_to_user(
                 $user_source,
-                _("Password recovery"),
+                _('Password recovery'),
                 sprintf(
-                    _("Please visit %s to recover your password."),
+                    _('Please visit %s to recover your password.'),
                     page_link_to_absolute('user_password_recovery') . '&token=' . $token
                 )
             );
-            success(_("We sent an email containing your password recovery link."));
+            success(_('We sent an email containing your password recovery link.'));
             redirect(page_link_to('login'));
         }
     }
@@ -372,7 +372,7 @@ function user_password_recovery_controller()
  */
 function user_password_recovery_title()
 {
-    return _("Password recovery");
+    return _('Password recovery');
 }
 
 /**
@@ -388,11 +388,11 @@ function load_user()
 
     $user = User($_REQUEST['user_id']);
     if ($user === false) {
-        engelsystem_error("Unable to load user.");
+        engelsystem_error('Unable to load user.');
     }
 
     if ($user == null) {
-        error(_("User doesn't exist."));
+        error(_('User doesn\'t exist.'));
         redirect(page_link_to());
     }