PHP use root namespace within another namespace without backslash

Question

I have a bunch of classes in my root namespace. I want to use them in another namespace but I can't figure out how to "include" them so that I don't have to add the backslash in the beginning.

class A {
    public static $a = 1;
}

namespace B {
    use \; // apparently invalid 

    class C {
        static function D { return A::$a; } // desired syntax
    }
}

\B\C::D(); // expected result is 1

Is this possible?

see this section of the manual

Jeff Lambert
– Jeff Lambert

2015-03-24 14:31:53 +00:00
Commented Mar 24, 2015 at 14:31 — Jeff Lambert
– Jeff Lambert, Commented Mar 24, 2015 at 14:31

deceze · Accepted Answer · 2015-03-24 14:32:06Z

2

Regardless of whether the namespace is "root" or not, you cannot import an entire namespace using use. The best you can do is:

use A;

answered Mar 24, 2015 at 14:32

deceze♦

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4 Comments

php_nub_qq Over a year ago

That is not true, I can almost bet I've seen imported namespaces in laravel

deceze Over a year ago

use is just aliasing names to other names. Yes, you can certainly alias a namespace, like use Foo\Bar, which is short for use Foo\Bar as Bar. However, you still have to write Bar\Baz, you can't just write Baz to use \Foo\Bar\Baz. I'm saying you cannot alias all classes in a namespace with just one use statement.

php_nub_qq Over a year ago

Oh well, it would be so awesome if I could.

deceze Over a year ago

That's unfortunately simply not how PHP works. Namespaces are just a layer on top of symbols (class names and such). A namespace cannot know all the classes that are in it, because PHP typically (auto)loads classes when they're first used, not when you write the use statement. PHP's namespaces are not a module import system.

rm-vanda · Accepted Answer · 2015-03-24 14:31:44Z

-1

Change your use statement to

use \A -

And then you'll get your desired syntax -

answered Mar 24, 2015 at 14:31

rm-vanda

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2 Comments

php_nub_qq Over a year ago

Yeah I figured I'd get answers like that so I mentioned "a bunch of classes".

deceze Over a year ago

The leading \ is superfluous. It's just use A.

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