PHP Predefined Constants
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PHP has some predefined constants.
There are eight predefined constants, These constants are case-insensitive.
| # | Constant | Description |
|---|---|---|
| 1 | __LINE__ | Get the current line number of the file. |
| 2 | __FILE__ | Get the full path and filename of the file with symlinks resolved. If It used inside an include, the name of the included file is returned as text. |
| 3 | __DIR__ | Get the directory of the file. If It used inside an include, the directory of the included file is returned as text. |
| 4 | __FUNCTION__ | Get the function name. |
| 5 | __CLASS__ | Get the class name. The class name includes the namespace. |
| 6 | __TRAIT__ | Get the trait name. The trait name includes the namespace. |
| 7 | __METHOD__ | Get the class method name. |
| 8 | __NAMESPACE__ | Get the name of the current namespace. |