Trying to understand namespace coding

Question

I've never really worked with PHP namespacing before and I was reading up on how to use it on the PHP website, including how to include namespace code and non-nonspace (global code) in the one file.

Source: http://www.php.net/manual/en/language.namespaces.definitionmultiple.php

I then tried the below for testing:

namespace { $bar = 123; } namespace moo { $bar = 400; } namespace { echo $bar . "<br>\n"; //echo moo\$bar . "<br>\n"; }

However what I got back was unexpected..

The output of the above is:

Shouldn't it be 123 since I am not referencing the moo namespace? Additionally, if I uncomment the next line I get a PHP syntax error.

What am I doing wrong?

That form of {} after namespaces is new to me, I thought it was just a command at the beginning of a PHP file and I think there is something in the documentation that says variables are always global:php.net/manual/en/language.namespaces.definition.php — Jason Sperske
– Jason Sperske, Commented Jan 30, 2014 at 17:15
@JasonSperske Well it said you have to use brackets if you want to use global and namespace code in the same file. My bad about the variable though, which is a pain. :( — Brett
– Brett, Commented Jan 30, 2014 at 17:18
"It is strongly discouraged as a coding practice to combine multiple namespaces into the same file." - From the php.net page you referenced. What are you trying to accomplish here? This is not how traditional namespacing is used. — Mitch
– Mitch, Commented Jan 30, 2014 at 17:19
@mitch I'm trying to build implement a SSO (single-sign on) with Invision Power Board, but I need to include a bunch of my own code and files inside one of their files but my database $object seems to be getting wiped or something. — Brett
– Brett, Commented Jan 30, 2014 at 17:24

Community · Accepted Answer · 2017-05-23 12:28:38Z

2

Here Can PHP namespaces contain variables? is your answer: "variables will always exist in the global scope. They are never bound to namespaces."

edited May 23, 2017 at 12:28

CommunityBot

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answered Jan 30, 2014 at 17:31

S Korolev

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