+ +
+

Reserved Names

+

In order to help out, CodeIgniter uses a series of function, method, +class and variable names in its operation. Because of this, some names +cannot be used by a developer. Following is a list of reserved names +that cannot be used.

+
+

Controller names

+

Since your controller classes will extend the main application +controller you must be careful not to name your methods identically to +the ones used by that class, otherwise your local methods will +override them. The following is a list of reserved names. Do not name +your controller any of these:

+
    +
  • CI_Controller
    • +
  • Default
    • +
  • index
    • +
+
+
+

Functions

+ +
+
+

Variables

+
    +
  • $config
    • +
  • $db
    • +
  • $lang
    • +
+
+
+

Constants

+
    +
  • ENVIRONMENT
    • +
  • FCPATH
    • +
  • SELF
    • +
  • BASEPATH
    • +
  • APPPATH
    • +
  • VIEWPATH
    • +
  • CI_VERSION
    • +
  • MB_ENABLED
    • +
  • ICONV_ENABLED
    • +
  • UTF8_ENABLED
    • +
  • FILE_READ_MODE
    • +
  • FILE_WRITE_MODE
    • +
  • DIR_READ_MODE
    • +
  • DIR_WRITE_MODE
    • +
  • FOPEN_READ
    • +
  • FOPEN_READ_WRITE
    • +
  • FOPEN_WRITE_CREATE_DESTRUCTIVE
    • +
  • FOPEN_READ_WRITE_CREATE_DESTRUCTIVE
    • +
  • FOPEN_WRITE_CREATE
    • +
  • FOPEN_READ_WRITE_CREATE
    • +
  • FOPEN_WRITE_CREATE_STRICT
    • +
  • FOPEN_READ_WRITE_CREATE_STRICT
    • +
  • SHOW_DEBUG_BACKTRACE
    • +
  • EXIT_SUCCESS
    • +
  • EXIT_ERROR
    • +
  • EXIT_CONFIG
    • +
  • EXIT_UNKNOWN_FILE
    • +
  • EXIT_UNKNOWN_CLASS
    • +
  • EXIT_UNKNOWN_METHOD
    • +
  • EXIT_USER_INPUT
    • +
  • EXIT_DATABASE
    • +
  • EXIT__AUTO_MIN
    • +
  • EXIT__AUTO_MAX
    • +
+
+
+ + +