Adding database folder
diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
new file mode 100644
index 0000000..a4d4eb0
--- /dev/null
+++ b/system/database/DB_utility.php
@@ -0,0 +1,282 @@
+<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * Code Igniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author Rick Ellis
+ * @copyright Copyright (c) 2006, pMachine, Inc.
+ * @license http://www.codeignitor.com/user_guide/license.html
+ * @link http://www.codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Database Utility Class
+ *
+ * @category Database
+ * @author Rick Ellis
+ * @link http://www.codeigniter.com/user_guide/database/
+ */
+class CI_DB_utility {
+
+
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Database Version Number. Returns a string containing the
+ * version of the database being used
+ *
+ * @access public
+ * @return string
+ */
+ function version()
+ {
+ if (FALSE === ($sql = $this->_version()))
+ {
+ if ($this->db_debug)
+ {
+ return $this->display_error('db_unsupported_function');
+ }
+ return FALSE;
+ }
+
+ if ($this->dbdriver == 'oci8')
+ {
+ return $sql;
+ }
+
+ $query = $this->query($sql);
+ $row = $query->row();
+ return $row->ver;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns an array of table names
+ *
+ * @access public
+ * @return array
+ */
+ function tables()
+ {
+ if (FALSE === ($sql = $this->_show_tables()))
+ {
+ if ($this->db_debug)
+ {
+ return $this->display_error('db_unsupported_function');
+ }
+ return FALSE;
+ }
+
+ $retval = array();
+ $query = $this->query($sql);
+
+ if ($query->num_rows() > 0)
+ {
+ foreach($query->result_array() as $row)
+ {
+ if (isset($row['TABLE_NAME']))
+ {
+ $retval[] = $row['TABLE_NAME'];
+ }
+ else
+ {
+ $retval[] = array_shift($row);
+ }
+ }
+ }
+
+ return $retval;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Determine if a particular table exists
+ * @access public
+ * @return boolean
+ */
+ function table_exists($table_name)
+ {
+ return ( ! in_array($this->dbprefix.$table_name, $this->tables())) ? FALSE : TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Fetch MySQL Field Names
+ *
+ * @access public
+ * @param string the table name
+ * @return array
+ */
+ function field_names($table = '')
+ {
+ if ($table == '')
+ {
+ if ($this->db_debug)
+ {
+ return $this->display_error('db_field_param_missing');
+ }
+ return FALSE;
+ }
+
+ if (FALSE === ($sql = $this->_show_columns($this->dbprefix.$table)))
+ {
+ if ($this->db_debug)
+ {
+ return $this->display_error('db_unsupported_function');
+ }
+ return FALSE;
+ }
+
+ $query = $this->query($sql);
+
+ $retval = array();
+ foreach($query->result_array() as $row)
+ {
+ if (isset($row['COLUMN_NAME']))
+ {
+ $retval[] = $row['COLUMN_NAME'];
+ }
+ else
+ {
+ $retval[] = current($row);
+ }
+ }
+
+ return $retval;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Returns an object with field data
+ *
+ * @access public
+ * @param string the table name
+ * @return object
+ */
+ function field_data($table = '')
+ {
+ if ($table == '')
+ {
+ if ($this->db_debug)
+ {
+ return $this->display_error('db_field_param_missing');
+ }
+ return FALSE;
+ }
+
+ return $this->_field_data($this->dbprefix.$table);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Primary
+ *
+ * Retrieves the primary key. It assumes that the row in the first
+ * position is the primary key
+ *
+ * @access public
+ * @param string the table name
+ * @return string
+ */
+ function primary($table = '')
+ {
+ $fields = $this->field_names($table);
+
+ if ( ! is_array($fields))
+ {
+ return FALSE;
+ }
+
+ return current($fields);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Generate an insert string
+ *
+ * @access public
+ * @param string the table upon which the query will be performed
+ * @param array an associative array data of key/values
+ * @return string
+ */
+ function insert_string($table, $data)
+ {
+ $fields = array();
+ $values = array();
+
+ foreach($data as $key => $val)
+ {
+ $fields[] = $key;
+ $values[] = $this->escape($val);
+ }
+
+ return $this->_insert($this->dbprefix.$table, $fields, $values);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Generate an update string
+ *
+ * @access public
+ * @param string the table upon which the query will be performed
+ * @param array an associative array data of key/values
+ * @param mixed the "where" statement
+ * @return string
+ */
+ function update_string($table, $data, $where)
+ {
+ if ($where == '')
+ return false;
+
+ $fields = array();
+ foreach($data as $key => $val)
+ {
+ $fields[$key] = $this->escape($val);
+ }
+
+ if ( ! is_array($where))
+ {
+ $dest = array($where);
+ }
+ else
+ {
+ $dest = array();
+ foreach ($where as $key => $val)
+ {
+ $prefix = (count($dest) == 0) ? '' : ' AND ';
+
+ if ($val != '')
+ {
+ if ( ! $this->_has_operator($key))
+ {
+ $key .= ' =';
+ }
+
+ $val = ' '.$this->escape($val);
+ }
+
+ $dest[] = $prefix.$key.$val;
+ }
+ }
+
+ return $this->_update($this->dbprefix.$table, $fields, $dest);
+ }
+
+
+}
+
+?>
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