bug #129: Check correct execution status instead of affected rows,

Author: avbdr

MysqliDb.php

@@ -316,15 +316,16 @@ public function update($tableName, $tableData)
 
         $this->_query = "UPDATE " . self::$_prefix . $tableName ." SET ";
 
-        $stmt = $this->_buildQuery(null, $tableData);
+        $stmt = $this->_buildQuery (null, $tableData);
         if ($stmt->execute() == false) {
             $this->reset();
             $this->_stmtError = $stmt->error;
-            return -1;
+            return false;
         }
         $this->reset();
+        $this->count = $stmt->affected_rows;
 
-        return ($stmt->affected_rows > 0);
+        return true;
     }
 
     /**

readme.md

@@ -68,6 +68,9 @@ $data = Array(
 $id = $db->insert ('users', $data);
 if ($id)
     echo 'user was created. Id=' . $id;
+else
+    echo 'insert failed: ' . $db->getLastError();
+
 ```
 
 ### Update Query
@@ -81,14 +84,11 @@ $data = Array (
 	// active = !active;
 );
 $db->where ('id', 1);
-$cols = $db->update ('users', $data);
-if ($cols == -1)
-    echo 'update failed: ' . $db->getLastError();
+if ($db->update ('users', $data))
+    echo $db->count . ' records were updated';
 else
-    echo $cols . ' records were updated';
+    echo 'update failed: ' . $db->getLastError();
 ```
-Note that update query will return 0 in case update query will fail AND also in case
-where no records were modified.
 
 ### Select Query
 After any select/get function calls amount or returned rows