PHP offers two syntax for declaring namespaces. You can use a namespace with no braces or with braces as seen below.
Without Braces
namespace foo/bar;
class Any{}
With Braces
namespace foo/bar {
class Any{}
}
Is there a difference in the functionality or behavior of these two ways of using namespaces or do they both work/function the same way?
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Answer
There are different reasons for each case, there is a good example on the PHP site.
The reason you’d use curly brackets around a namespace is if there are multiple namespaces in the one file or where you need to have global non-namespaced code in the same file as code that is contained within a namespace.
Also if there are multiple namespaces in one file, the non-bracketed syntax is allowed as well.
As per php guidelines this is not recommended and if you can, just keep it to one namespace per file.