#148678: Fix notices/warnings on invalid paths like 'node/zzz'. (chx/pwolanin/webernet)

modules/comment/comment.module

@@ -973,7 +973,7 @@ function comment_render($node, $cid = 0) {
     $order = _comment_get_display_setting('sort');
     $comments_per_page = _comment_get_display_setting('comments_per_page');
 
-    if ($cid) {
+    if ($cid && is_numeric($cid)) {
       // Single comment view.
       $query = 'SELECT c.cid, c.pid, c.nid, c.subject, c.comment, c.format, c.timestamp, c.name, c.mail, c.homepage, u.uid, u.name AS registered_name, u.signature, u.picture, u.data, c.score, c.users, c.status FROM {comments} c INNER JOIN {users} u ON c.uid = u.uid WHERE c.cid = %d';
       $query_args = array($cid);

modules/node/node.module

@@ -568,7 +568,7 @@ function node_load($param = array(), $revision = NULL, $reset = NULL) {
     $cond = 'n.nid = %d';
     $arguments[] = $param;
   }
-  else {
+  elseif (is_array($param)) {
     // Turn the conditions into a query.
     foreach ($param as $key => $value) {
       $cond[] = 'n.'. db_escape_string($key) ." = '%s'";
@@ -576,6 +576,9 @@ function node_load($param = array(), $revision = NULL, $reset = NULL) {
     }
     $cond = implode(' AND ', $cond);
   }
+  else {
+    return FALSE;
+  }
 
   // Retrieve the node.
   // No db_rewrite_sql is applied so as to get complete indexing for search.

modules/user/user.module

@@ -130,6 +130,9 @@ function user_load($array = array()) {
   if (is_numeric($array)) {
     $array = array('uid' => $array);
   }
+  elseif (!is_array($array)) {
+    return FALSE;
+  }
 
   foreach ($array as $key => $value) {
     if ($key == 'uid' || $key == 'status') {