If you've been around WordPress for awhile, you've noticed that classes and functions are prefixed with some characters (unique naming) to differentiate code and avoid collisions of same named functionality. The next step in your software growth is to drop the prefixes and start packaging your work within namespaces. In this episode, we are going to explore namespaces. https://hub.wpdevelopersclub.com/podcast/the-ins-and-outs-of-php-namespacing-episode-001/

1. The Ins and Outs of
PHP Namespacing
Know the Code Show
Episode 1

2. PHP Name Resolution Rule
1. Fully qualified functions, e.g. Fooget_the_title();
2. Current namespace
3. Global namespace

3. Q3 - Another way to call callback
add_action( 'loop_start', 'Know_The_Code_ShowEpisode001_Q2demonstrate_namspacing' );
PHP compiles __NAMESPACE__ into its full qualified
path and function name:
namespace + + function name
Know_The_Code_ShowEpisode001_Q2demonstrate_namspacing

4. Callbacks must be to Fully
Qualified Functions or
Methods

5. Q4 How to Call Functions from a
Different Namespace
Ans> There are actually 3 different ways:
1. Add the sub-namespace
Supportget_the_title()
2. Fully qualified namespace
Know_The_Code_ShowEpisode001_Q4Supportget_the_title()
3. “use” keyword
use Know_The_Code_ShowEpisode001_Q4Support as title;
titleget_the_title()

6. Q&A