Index: includes/bootstrap.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/bootstrap.inc,v
retrieving revision 1.66
diff -u -r1.66 bootstrap.inc
--- includes/bootstrap.inc	8 Sep 2005 19:17:34 -0000	1.66
+++ includes/bootstrap.inc	11 Sep 2005 15:38:28 -0000
@@ -148,7 +148,7 @@
 function drupal_get_filename($type, $name, $filename = NULL) {
   static $files = array();
 
-  if (!$files[$type]) {
+  if (!isset($files[$type])) {
     $files[$type] = array();
   }
 
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.476
diff -u -r1.476 common.inc
--- includes/common.inc	31 Aug 2005 18:37:30 -0000	1.476
+++ includes/common.inc	11 Sep 2005 18:05:11 -0000
@@ -54,9 +54,11 @@
 function drupal_get_content($region = null, $delimiter = ' ') {
   $content = drupal_set_content();
   if (isset($region)) {
-    if (is_array($content[$region])) {
-      return implode ($delimiter, $content[$region]);
-    }
+    if (isset($content[$region])) {
+      if (is_array($content[$region])) {
+        return implode ($delimiter, $content[$region]);
+      }
+	 }
   }
   else {
     foreach (array_keys($content) as $region) {
@@ -599,7 +601,7 @@
     // Useful for e.g. XML/HTML 'lang' attributes.
     $languages = array('en' => 'English');
   }
-  if ($user->uid && $languages[$user->language]) {
+  if ($user->uid && isset($languages[$user->language])) {
     return $user->language;
   }
   else {
@@ -1130,7 +1132,7 @@
 function form_group_collapsible($legend, $group, $collapsed = FALSE, $description = NULL, $attributes = NULL) {
   drupal_add_js('misc/collapse.js');
 
-  $attributes['class'] .= ' collapsible';
+  ($attributes == NULL) ? $attributes['class'] = 'collapsible' : $attributes['class'] .= ' collapsible';
   if ($collapsed) {
     $attributes['class'] .= ' collapsed';
   }
Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.84
diff -u -r1.84 menu.inc
--- includes/menu.inc	25 Aug 2005 21:14:16 -0000	1.84
+++ includes/menu.inc	11 Sep 2005 18:18:34 -0000
@@ -737,7 +737,18 @@
   $a = &$menu['items'][$a];
   $b = &$menu['items'][$b];
 
-  return $a['weight'] < $b['weight'] ? -1 : ($a['weight'] > $b['weight'] ? 1 : ($a['title'] < $b['title'] ? -1 : 1));
+  if ($a['weight'] < $b['weight']) {
+    return -1;
+  }
+  elseif ($a['weight'] > $b['weight']) {
+    return 1;
+  }
+  elseif (isset($a['title']) && isset($b['title']) && ($a['title'] < $b['title'])) {
+    return -1;
+  }
+  else {
+    return 1;
+  }
 }
 
 /**
@@ -922,7 +933,7 @@
 
       $_menu['items'][$mid]['access'] = $item['access'];
       $_menu['items'][$mid]['callback'] = $item['callback'];
-      $_menu['items'][$mid]['callback arguments'] = $item['callback arguments'];
+      isset($_menu['items'][$mid]['callback arguments']) ? $_menu['items'][$mid]['callback arguments'] = $item['callback arguments'] : $_menu['items'][$mid]['callback arguments'] = '';
     }
     else {
       if (!array_key_exists('path', $item)) {
Index: includes/pager.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/pager.inc,v
retrieving revision 1.47
diff -u -r1.47 pager.inc
--- includes/pager.inc	25 Aug 2005 21:14:16 -0000	1.47
+++ includes/pager.inc	11 Sep 2005 16:59:02 -0000
@@ -50,14 +50,16 @@
  */
 function pager_query($query, $limit = 10, $element = 0, $count_query = NULL) {
   global $pager_page_array, $pager_total, $pager_total_items;
-  $page = $_GET['page'];
+  $page = isset($_GET['page']) ? $_GET['page'] : '';
 
   // Substitute in query arguments.
   $args = func_get_args();
   $args = array_slice($args, 4);
   // Alternative syntax for '...'
-  if (is_array($args[0])) {
-    $args = $args[0];
+  if (isset ($args[0])) {
+    if (is_array($args[0])) {
+      $args = $args[0];
+    }
   }
 
   // Construct a count query if none was given.
Index: includes/theme.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/theme.inc,v
retrieving revision 1.258
diff -u -r1.258 theme.inc
--- includes/theme.inc	8 Sep 2005 19:17:34 -0000	1.258
+++ includes/theme.inc	11 Sep 2005 16:42:43 -0000
@@ -316,7 +316,10 @@
 
       // Get the amount of links to show, possibly expanding if there are more links defined than the count specifies.
       $count = variable_get($type . '_link_count', 5);
-      $count = ($count > sizeof($value['link'])) ? $count : sizeof($value['link']);
+
+      if (isset($value['link'])) {
+        $count = ($count > sizeof($value['link'])) ? $count : sizeof($value['link']);
+		}
 
       if ($settings['toggle_' . $type . '_links']) {
         for ($i =0; $i < $count; $i++) {
Index: modules/block.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/block.module,v
retrieving revision 1.178
diff -u -r1.178 block.module
--- modules/block.module	25 Aug 2005 21:14:16 -0000	1.178
+++ modules/block.module	11 Sep 2005 18:27:56 -0000
@@ -96,6 +96,8 @@
 function block_block($op = 'list', $delta = 0, $edit = array()) {
   switch ($op) {
     case 'list':
+      $blocks = '';
+		
       $result = db_query('SELECT bid, title, info FROM {boxes} ORDER BY title');
       while ($block = db_fetch_object($result)) {
         $blocks[$block->bid]['info'] = $block->info ? check_plain($block->info) : check_plain($block->title);
@@ -404,8 +406,8 @@
  * Menu callback; displays the block overview page.
  */
 function block_admin() {
-  $edit = $_POST['edit'];
-  $op = $_POST['op'];
+  $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
+  $op = isset($_POST['op']) ? $_POST['op'] : '';
 
   if ($op == t('Save blocks')) {
     block_admin_save($edit);
Index: modules/menu.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/menu.module,v
retrieving revision 1.34
diff -u -r1.34 menu.module
--- modules/menu.module	25 Aug 2005 21:14:16 -0000	1.34
+++ modules/menu.module	11 Sep 2005 18:10:20 -0000
@@ -99,8 +99,8 @@
   if (user_access('administer menu')) {
     switch ($op) {
       case 'form post':
-        $edit = $_POST['edit'];
-        $edit['nid'] = $node->nid;
+        $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
+        $edit['nid'] = isset($node->nid) ? $node->nid : '';
         return menu_node_form($edit);
         break;
 
@@ -514,7 +514,7 @@
 
   $options = array();
 
-  if (isset($menu['items'][$pid]) && $menu['items'][$pid]['children']) {
+  if (isset($menu['items'][$pid]) && isset($menu['items'][$pid]['children'])) {
     usort($menu['items'][$pid]['children'], '_menu_sort');
     foreach ($menu['items'][$pid]['children'] as $child) {
       if ($child != $mid) {
@@ -548,17 +548,19 @@
     }
   }
 
-  $group = form_textfield(t('Title'), 'menu][title', $item['title'], 60, 128, t('The name to display for this link.'));
+  $group = form_textfield(t('Title'), 'menu][title', isset($item['title']) ? $item['title'] : '', 60, 128, t('The name to display for this link.'));
   // Generate a list of possible parents (not including this item or descendants).
-  $options = menu_parent_options($edit['mid']);
-  $group .= form_select(t('Parent item'), 'menu][pid', $item['pid'], $options);
-  $group .= form_hidden('menu][description', $item['description']);
-  $group .= form_hidden('menu][path', $item['path']);
-  $group .= form_hidden('menu][weight', ($item['weight']) ? $item['weight'] : 0);
-  $group .= form_hidden('menu][mid', ($item['mid']) ? $item['mid'] : 0);
-  $group .= form_hidden('menu][type', ($item['type']) ? $item['type'] : MENU_CUSTOM_ITEM);
-
-  if ($item['mid'] > 0) {
+  if (isset($edit['mid'])) {
+    $options = menu_parent_options($edit['mid']);
+    $group .= form_select(t('Parent item'), 'menu][pid', $item['pid'], $options);
+    $group .= form_hidden('menu][description', $item['description']);
+    $group .= form_hidden('menu][path', $item['path']);
+    $group .= form_hidden('menu][weight', ($item['weight']) ? $item['weight'] : 0);
+    $group .= form_hidden('menu][mid', ($item['mid']) ? $item['mid'] : 0);
+    $group .= form_hidden('menu][type', ($item['type']) ? $item['type'] : MENU_CUSTOM_ITEM);
+  }
+  
+  if (isset($item['mid']) && $item['mid'] > 0) {
     $group .= form_checkbox(t('Check to delete this menu item.'), 'menu][delete', 1, $item['delete'], null);
   }
   $form = form_group_collapsible(t('Menu item settings'), $group, TRUE);
Index: modules/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node.module,v
retrieving revision 1.527
diff -u -r1.527 node.module
--- modules/node.module	2 Sep 2005 02:11:41 -0000	1.527
+++ modules/node.module	11 Sep 2005 17:51:40 -0000
@@ -120,7 +120,7 @@
     $history[$nid] = db_fetch_object(db_query("SELECT timestamp FROM {history} WHERE uid = '$user->uid' AND nid = %d", $nid));
   }
 
-  return ($history[$nid]->timestamp ? $history[$nid]->timestamp : 0);
+  return (isset($history[$nid]->timestamp) ? $history[$nid]->timestamp : 0);
 }
 
 /**
@@ -353,7 +353,7 @@
 
   if (is_numeric($param)) {
     $cachable = $revision == NULL;
-    if ($cachable && $nodes[$param]) {
+    if ($cachable && isset($nodes[$param])) {
       return $nodes[$param];
     }
     $cond = 'n.nid = '. $param;
@@ -1229,20 +1229,20 @@
   // Auto-generate the teaser, but only if it hasn't been set (e.g. by a
   // module-provided 'teaser' form item).
   if (!isset($node->teaser)) {
-    $node->teaser = node_teaser($node->body, $node->format);
+    $node->teaser = isset($node->format) && isset($node->body) ? node_teaser($node->body, $node->format) : '';
   }
 
-  if (node_last_changed($node->nid) > $node->changed) {
+  if (isset($node->nid) && (node_last_changed($node->nid) > $node->changed)) {
     form_set_error('changed', t('This content has been modified by another user, unable to save changes.'));
   }
 
   if (user_access('administer nodes')) {
     // Set up default values, if required.
-    if (!$node->created) {
+    if (!isset($node->created)) {
       $node->created = time();
     }
 
-    if (!$node->date) {
+    if (!isset($node->date)) {
       $node->date = format_date($node->created, 'custom', 'Y-m-d H:i:s O');
     }
 
@@ -1299,8 +1299,13 @@
  * Generate the node editing form.
  */
 function node_form($edit) {
+  // Initialize variables
+  $output = '';
+  $options = '';
+  $extras = '';
+  
   // Validate the node if we don't already know the errors.
-  if (!$edit->validated) {
+  if ((!isset($edit)) || (!isset($edit->validated)) || !$edit->validated) {
     $edit = node_validate($edit);
   }
 
@@ -1351,13 +1356,13 @@
 
   // Add the default fields.
   $output .= '<div class="standard">';
-  $output .= form_textfield(t('Title'), 'title', $edit->title, 60, 128, NULL, NULL, TRUE);
+  $output .= form_textfield(t('Title'), 'title', isset($edit->title) ? $edit->title : '', 60, 128, NULL, NULL, TRUE);
 
   // Add the node-type-specific fields.
   $output .= $form;
 
   // Add the hidden fields.
-  if ($edit->nid) {
+  if (isset($edit->nid)) {
     $output .= form_hidden('nid', $edit->nid);
   }
 
@@ -1367,11 +1372,11 @@
     $output .= form_hidden('uid', $edit->uid);
   }
 
-  if ($edit->created) {
+  if (isset($edit->created)) {
     $output .= form_hidden('created', $edit->created);
   }
 
-  if ($edit->changed) {
+  if (isset($edit->changed)) {
     $output .= form_hidden('changed', $edit->changed);
   }
 
@@ -1380,11 +1385,11 @@
   // Add the buttons.
   $output .= form_submit(t('Preview'));
 
-  if ($edit->type && (($_POST['op'] == t('Preview') && !form_get_errors()) || !variable_get('node_preview', 0))) {
+  if ($edit->type && ((isset($_POST['op']) && $_POST['op'] == t('Preview') && !form_get_errors()) || !variable_get('node_preview', 0))) {
     $output .= form_submit(t('Submit'));
   }
 
-  if ($edit->nid && node_access('delete', $edit)) {
+  if (isset($edit->nid) && node_access('delete', $edit)) {
     $output .= form_submit(t('Delete'));
   }
 
@@ -1406,10 +1411,10 @@
   }
 
   $attributes = array('id' => 'node-form');
-  if (is_array($param['options'])) {
+  if (isset($param['options']) && is_array($param['options'])) {
     $attributes = array_merge($param['options'], $attributes);
   }
-  return form($output, ($param['method'] ? $param['method'] : 'post'), $param['action'], $attributes);
+  return form($output, (isset($param['method']) ? $param['method'] : 'post'), isset($param['action']) ? $param['action'] : '', $attributes);
 }
 
 /**
@@ -1418,7 +1423,7 @@
 function node_add($type) {
   global $user;
 
-  $edit = $_POST['edit'];
+  $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
 
   // If a node type has been specified, validate its existence.
   if (array_key_exists($type, node_get_types()) && node_access('create', $type)) {
@@ -1428,7 +1433,7 @@
     // Allow the following fields to be initialized via $_GET (e.g. for use
     // with a "blog it" bookmarklet):
     foreach (array('title', 'teaser', 'body') as $field) {
-      if ($_GET['edit'][$field]) {
+      if (isset($_GET['edit'][$field])) {
         $node[$field] = $_GET['edit'][$field];
       }
     }
@@ -1665,8 +1670,8 @@
  * Menu callback; dispatches control to the appropriate operation handler.
  */
 function node_page() {
-  $op = $_POST['op'] ? $_POST['op'] : arg(1);
-  $edit = $_POST['edit'];
+  $op = isset($_POST['op']) ? $_POST['op'] : arg(1);
+  $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
 
   if (is_numeric($op)) {
     $op = (arg(2) && !is_numeric(arg(2))) ? arg(2) : 'view';
@@ -2015,7 +2020,7 @@
       }
     }
     $sql .= implode(',', $grants) .') AND grant_view = 1';
-    $result = db_query($sql, $node->nid);
+    $result = db_query($sql);
     $access = db_result($result);
   }
 
Index: modules/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system.module,v
retrieving revision 1.233
diff -u -r1.233 system.module
--- modules/system.module	8 Sep 2005 20:25:08 -0000	1.233
+++ modules/system.module	11 Sep 2005 15:57:31 -0000
@@ -347,10 +347,10 @@
   foreach ($themes as $theme) {
     foreach (file_scan_directory(dirname($theme->filename), 'style.css$') as $style) {
       $style->style = TRUE;
-      $style->template = $theme->template;
+      $style->template = isset($theme->template) ? $theme->template : FALSE;
       $style->name = basename(dirname($style->filename));
       $style->owner = $theme->filename;
-      $style->prefix = $theme->template ? $theme->prefix : $theme->name;
+      $style->prefix = $style->template ? $theme->prefix : $theme->name;
       // do not double-insert styles with theme files in their directory
       if (array_key_exists($style->name, $themes)) {
         continue;
@@ -552,8 +552,8 @@
 }
 
 function system_listing_save($edit = array()) {
-  $op = $_POST['op'];
-  $edit = $_POST['edit'];
+  $op = isset($_POST['op']) ? $_POST['op'] : '';
+  $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
 
   if ($op == t('Save configuration')) {
     db_query("UPDATE {system} SET status = 0 WHERE type = '%s'", $edit['type']);
Index: modules/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user.module,v
retrieving revision 1.509
diff -u -r1.509 user.module
--- modules/user.module	8 Sep 2005 19:46:05 -0000	1.509
+++ modules/user.module	11 Sep 2005 18:23:19 -0000
@@ -606,7 +606,7 @@
       $picture = variable_get('user_picture_default', '');
     }
 
-    if ($picture) {
+    if (isset($picture)) {
       $alt = t('%user\'s picture', array('%user' => $account->name ? $account->name : variable_get('anonymous', 'Anonymous')));
       $picture = theme('image', $picture, $alt, $alt, '', false);
       if ($account->uid) {
@@ -1281,7 +1281,7 @@
     foreach (module_list() as $module) {
       if ($data = module_invoke($module, 'user', 'view', '', $account)) {
         foreach ($data as $category => $content) {
-          $fields[$category] .= $content;
+          isset($fields[$category]) ? $fields[$category] .= $content : $fields[$category] = $content;
         }
       }
     }
@@ -1297,8 +1297,8 @@
 function user_page() {
   global $user;
 
-  $edit = $_POST['edit'];
-  $op = $_POST['op'];
+  $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
+  $op = isset($_POST['op']) ? $_POST['op'] : '';
 
   if (empty($op)) {
     $op = arg(2) ? arg(2) : arg(1);
@@ -1545,7 +1545,7 @@
  * Menu callback: administer permissions.
  */
 function user_admin_perm() {
-  $edit = $_POST['edit'];
+  $edit = isset($_POST['edit']) ? $_POST['edit'] : '';
   if ($edit) {
     // Save permissions:
     $result = db_query('SELECT * FROM {role}');
Index: modules/watchdog.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/watchdog.module,v
retrieving revision 1.126
diff -u -r1.126 watchdog.module
--- modules/watchdog.module	25 Aug 2005 21:14:17 -0000	1.126
+++ modules/watchdog.module	11 Sep 2005 18:19:23 -0000
@@ -77,7 +77,7 @@
     $_SESSION['watchdog_overview_filter'] = 'all';
   }
 
-  $op = $_POST['op'];
+  $op = isset($_POST['op']) ? $_POST['op'] : '';
   if ($op == t('Filter') && isset($_POST['edit']['filter'])) {
     $_SESSION['watchdog_overview_filter'] = $_POST['edit']['filter'];
   }
Index: themes/engines/phptemplate/phptemplate.engine
===================================================================
RCS file: /cvs/drupal/drupal/themes/engines/phptemplate/phptemplate.engine,v
retrieving revision 1.17
diff -u -r1.17 phptemplate.engine
--- themes/engines/phptemplate/phptemplate.engine	9 Sep 2005 05:32:31 -0000	1.17
+++ themes/engines/phptemplate/phptemplate.engine	11 Sep 2005 18:30:04 -0000
@@ -60,7 +60,7 @@
     $variables = array_merge($variables, _phptemplate_variables($hook, $variables));
   }
 
-  if ($variables['template_file']) {
+  if (isset($variables['template_file'])) {
     $file = $variables['template_file'];
   }
 
@@ -86,13 +86,13 @@
 function _phptemplate_default_variables($hook, $variables) {
   global $theme;
   static $count = array();
-  $count[$hook] = is_int($count[$hook]) ? $count[$hook] : 1;
+  $count[$hook] = isset($count[$hook]) && is_int($count[$hook]) ? $count[$hook] : 1;
   $variables['zebra'] = ($count[$hook] % 2) ? 'odd' : 'even';
   $variables['id'] = $count[$hook]++;
 
   global $sidebar_indicator;
   if ($hook == 'block') {
-    $count['block_counter'][$sidebar_indicator] = is_int($count['block_counter'][$sidebar_indicator]) ? $count['block_counter'][$sidebar_indicator] : 1;
+    $count['block_counter'][$sidebar_indicator] = isset($count['block_counter']) && is_int($count['block_counter'][$sidebar_indicator]) ? $count['block_counter'][$sidebar_indicator] : 1;
     $variables['block_zebra'] = ($count['block_counter'][$sidebar_indicator] % 2) ? 'odd' : 'even';
     $variables['block_id'] = $count['block_counter'][$sidebar_indicator]++;
   }
@@ -104,7 +104,7 @@
       // This pre-loading is necessary because phptemplate uses variable names different from
       // the region names, e.g., 'sidebar_left' instead of 'left'.
       if (!in_array($region, array('left', 'right', 'footer'))) {
-        $variables[$region] .= theme('blocks', $region);
+        isset($variables[$region]) ? $variables[$region] .= theme('blocks', $region) : $variables[$region] = theme('blocks', $region);
       }
     }
   }
@@ -194,7 +194,7 @@
     'layout'              => $layout,
     'logo'                => theme_get_setting('logo'),
     'messages'            => theme('status_messages'),
-    'mission'             => $mission,
+    'mission'             => isset($mission) ? $mission : '',
     'onload_attributes'   => theme('onload_attribute'),
     'primary_links'       => theme_get_setting('primary_links'),
     'site_name'           => (theme_get_setting('toggle_name') ? variable_get('site_name', 'Drupal') : ''),