diff options
Diffstat (limited to 'system/database/DB_driver.php')
| -rw-r--r-- | system/database/DB_driver.php | 45 |
1 files changed, 14 insertions, 31 deletions
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php index 5102cc74c..81af466ef 100644 --- a/system/database/DB_driver.php +++ b/system/database/DB_driver.php @@ -555,37 +555,6 @@ class CI_DB_driver { // -------------------------------------------------------------------- - // -------------------------------------------------------------------- - - /** - * List databases - * - * @access public - * @return bool - */ - function list_databases() - { - // Is there a cached result? - if (isset($this->cache['db_names'])) - { - return $this->cache['db_names']; - } - - $query = $this->query($this->_list_database()); - $dbs = array(); - if ($query->num_rows() > 0) - { - foreach ($query->result_array() as $row) - { - $dbs[] = current($row); - } - } - - return $this->cache['db_names'] =& $dbs; - } - - // -------------------------------------------------------------------- - /** * Returns an array of table names * @@ -694,6 +663,20 @@ class CI_DB_driver { return $this->cache['field_names'][$table] =& $retval; } + + // -------------------------------------------------------------------- + + /** + * Determine if a particular field exists + * @access public + * @param string + * @param string + * @return boolean + */ + function field_exists($field_name, $table_name) + { + return ( ! in_array($field_name, $this->list_fields($table_name))) ? FALSE : TRUE; + } // -------------------------------------------------------------------- |