Magic constants
There are nine magical constants that change depending on
where they are used. For example, the value of
__LINE__ depends on the line that it's
used on in your script. All these "magical" constants are resolved
at compile time, unlike regular constants, which are resolved at runtime.
These special constants are case-insensitive and are as follows:
| Name | Description |
|---|---|
__LINE__ |
The current line number of the file. |
__FILE__ |
The full path and filename of the file with symlinks resolved. If used inside an include, the name of the included file is returned. |
__DIR__ |
The directory of the file. If used inside an include,
the directory of the included file is returned. This is equivalent
to dirname(__FILE__). This directory name
does not have a trailing slash unless it is the root directory.
|
__FUNCTION__ |
The function name, or |
__CLASS__ |
The class name. The class name includes the namespace
it was declared in (e.g. Foo\Bar).
When used
in a trait method, __CLASS__ is the name of the class the trait
is used in.
|
__TRAIT__ |
The trait name. The trait name includes the namespace
it was declared in (e.g. Foo\Bar).
|
__METHOD__ |
The class method name. |
__NAMESPACE__ |
The name of the current namespace. |
ClassName::class |
The fully qualified class name. |
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