- In PHP magic constants are the predefined constants which is used on the basis of their use.
- Constants are created by various extensions and there are nine magic constants in the PHP and all of the constant resolved at the compile-time, not like the regular constant which is resolved at run time.
- In this there are eight magic constants which start and end with double underscores (__), they are.
- __line__
- __file__
- __dir__
- __function__
- __class__
- __method__
- __namespace__
- __trait__
__line__
- This type of magic constant returns the current line number of the file.
- In our program file if we use this magic constant somewhere then this constant will display the line number during compile time.
Syntax
[pastacode lang=”php” manual=”%20%20%20%20%20%20%20%20%20__line__” message=”” highlight=”” provider=”manual”/]__file__
- This type of magic constant return the full path of the executed file with the name of the file.
Syntax
[pastacode lang=”php” manual=”%20%20%20%20%20%20%20%20%20__file__” message=”” highlight=”” provider=”manual”/]__dir__
- This type of magic constant returns the directory of the executed file.
Syntax
[pastacode lang=”php” manual=”%20%20%20%20%20%20%20%20%20%20__dir__” message=”” highlight=”” provider=”manual”/]__function__
- This type of magic constant returns the name of the function where it is included.
Syntax
[pastacode lang=”php” manual=”%20%20%20%20%20%20%20%20%20__function__” message=”” highlight=”” provider=”manual”/]__class__
- This type of magic constant returns the name of the class where it is included.
Syntax
[pastacode lang=”php” manual=”__class__” message=”” highlight=”” provider=”manual”/]__method__
- This type of magic constant returns the method name where it is included.
Syntax
[pastacode lang=”php” manual=”%20%20%20%20%20%20%20__method__” message=”” highlight=”” provider=”manual”/]__namespace__
This type of magic constant returns the current namespace where it is included.
Syntax
[pastacode lang=”php” manual=”%20%20%20%20%20%20%20__namespace__” message=”” highlight=”” provider=”manual”/]__trait__
- This type of magic constant returns the trait name where it is included.
Syntax
[pastacode lang=”php” manual=”%C2%A0%20__trait__” message=”” highlight=”” provider=”manual”/]
