fixes

MysqliDb.php

@@ -1341,6 +1341,9 @@ protected function replacePlaceHolders ($str, $vals) {
         $i = 1;
         $newStr = "";
 
+        if (empty ($vals))
+            return $str;
+
         while ($pos = strpos ($str, "?")) {
             $val = $vals[$i++];
             if (is_object ($val))

dbObject.md

@@ -285,6 +285,16 @@ Object could be easily converted to a json string or an array.
     $userArray = $user->toArray();
 ```
 
+###Pagination
+Use paginate() instead of get() to fetch paginated result
+```php
+$page = 1;
+// set page limit to 2 results per page. 20 by default
+product::$pageLimit = 2;
+$products = product::arraybuilder()->paginate($page);
+echo "showing $page out of " . product::$totalPages;
+
+```
 ###Examples
 
 Please look for a use examples in <a href='tests/dbObjectTests.php'>tests file</a> and test models inside the <a href='tests/models/'>test models</a> directory

dbObject.php

@@ -80,13 +80,13 @@ class dbObject {
      *
      * @var int
      */
-    public $pageLimit = 20;
+    public static $pageLimit = 20;
     /**
      * Variable that holds total pages count of last paginate() query
      *
      * @var int
      */
-    public $totalPages = 0;
+    public static $totalPages = 0;
     /**
      * An array that holds insert/update/select errors
      *
@@ -427,10 +427,10 @@ protected function count () {
      * @return array
      */
     private function paginate ($page, $fields = null) {
-        $offset = $this->pageLimit * ($page - 1);
+        $offset = self::$pageLimit * ($page - 1);
         $this->db->withTotalCount();
-        $results = $this->get (Array ($this->pageLimit, $offset), $fields);
-        $this->totalPages = round ($this->db->totalCount / $this->pageLimit);
+        $results = $this->get (Array ($offset, self::$pageLimit), $fields);
+        self::$totalPages = round ($this->db->totalCount / self::$pageLimit);
 
         return $results;
     }