What does ClassName::class mean in PHP?

Question

When I read code written in the Laravel framework, I see a lot of uses of ClassName::class. What does is the meaning of the modifier ::class? Is th

Answer 1

Please refer to this

::class
Since PHP 5.5, the class keyword is also used for class name resolution. 

Answer 2

It just returns the class name with namespace! Since PHP 5.5, the class keyword is also used for class name resolution. You can get a string containing the fully qualified name of the ClassName class by using ClassName::class. This is particularly useful with namespaced classes.

namespace NS {
    class ClassName {
    }
    echo ClassName::class;
}

The above example will output:

NS\ClassName

Answer 3

Since PHP 5.5, the class keyword is also used for class name resolution. You can get a string containing the fully qualified name of the ClassName class by using ClassName::class. This is particularly useful with namespaced classes.

For example

namespace MyProject;
class Alpha{ }

namespace MyOtherProject;
class Beta{ }

echo Alpha::class; // displays: MyProject\Alpha
echo Beta::class; // displays: MyOtherProject\Beta