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Using Functions from Another Namespace
Lab: Ins and Outs of PHP Namespace for WordPress
Video Runtime: 16:37
You can use functions from different namespaces. But you have to be aware of how to bring in that function. Remember, the function has a fully qualified name which includes its namespace. When using that function in another namespace, you have choices:
- You can specify its fully qualified name such as
\KnowTheCode\InsOutsPHPNamespacing\Sandbox\get_post_id() - If the namespace is the root, then you can use a relative name such as
Sandbox\get_post_id() - You can alias the namespace and then use that alias in place of the fully qualified namespace
- If you are using PHP 5.6 and up, then you can import the function.
You can learn more about aliasing and importing in the PHP manual.
Who needs copy/paste? Right. Writing code from scratch is fun!
Episodes
Total Lab Runtime: 02:25:26
- 1 Lab Introductionfree 02:59
- 2 What and Why of Namespacingfree 20:15
- 3 Why Namespacing instead of Prefixing?free 12:39
- 4 The Basicspro 17:36
- 5 Fully Qualified Namingpro 06:50
- 6 Callbacks and Namespacingpro 08:00
- 7 Name Resolution Rulespro 12:17
- 8 Using Functions from Another Namespacepro 16:37
- 10 Class Basicspro 12:20
- 11 Practical Example: Convert from Prefixingpro 10:08
- 12 Real World Example: Convert from Prefixingpro 06:14
- 13 Architecture - Building in Packages and Modulespro 08:59
- 14 PHP Examples - Laravel & Symfonypro 02:50
- 15 Wrap it Upfree 07:42
