This post is about Reserved Names in CodeIgniter. Reserved names are names that are used in internal operations and developer can not use that names.
In CodeIgniter, some controller names, function names, variable names, and constant names are reserved, so developer/programmer can not use that names.
Constants are variable names with fixed/constant value. It should be in capital letter. Constants are fixed, we can not change value of constants.
Following are list of reserved constants in CodeIgniter:
Variables are names given to the values. We can change value of variables.
There are following reserved variables in CodeIgniter:
Function is a few line of codes and reduces redundancy in application.
In CodeIgniter there are following reserved functions that developer / programmer can't create such functions:
In CodeIgniter, controller is a special class and works as intermediary between views and model.
Following are the reserved controller names in CodeIgniter, programmer / developer can't use it:
Conclusion:
Above listed names are reserved names in CodeIgniter, so developer / programmer should have to take care about naming controller name, function name, variable name, or constant name.
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| Reserved Names CodeIgniter |
In CodeIgniter, some controller names, function names, variable names, and constant names are reserved, so developer/programmer can not use that names.
1. Reserved Constants In CI
Constants are variable names with fixed/constant value. It should be in capital letter. Constants are fixed, we can not change value of constants.
Following are list of reserved constants in CodeIgniter:
- ENVIRONMENT
- EXT
- FCPATH
- SELF
- BASEPATH
- APPPATH
- CI_VERSION
- 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
2. Reserved Variables In CI
Variables are names given to the values. We can change value of variables.
There are following reserved variables in CodeIgniter:
- $config
- $mimes
- $lang
3. Reserved Functions In CI
Function is a few line of codes and reduces redundancy in application.
In CodeIgniter there are following reserved functions that developer / programmer can't create such functions:
- is_really_writable()
- load_class()
- get_config()
- config_item()
- show_error()
- show_404()
- log_message()
- _exception_handler()
- get_instance()
4. Reserved Controller In CI
In CodeIgniter, controller is a special class and works as intermediary between views and model.
Following are the reserved controller names in CodeIgniter, programmer / developer can't use it:
- Controller
- CI_Base
- _ci_initialize
- Default
- index
Conclusion:
Above listed names are reserved names in CodeIgniter, so developer / programmer should have to take care about naming controller name, function name, variable name, or constant name.
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