Information header
Don't just skim this section thinking it's a waste of breath on the self-explanatory header fields. Unlike a normal PHP file in which the comments are purely optional, in WordPress plugin and theme files, the Information Header is required! It is this block of text that causes a file to show up on WordPress' radar so that you can activate it or deactivate it. If your plugin is missing a valid information header, you cannot use it!
Exercise—breaking the header
To reinforce that the information header is an integral part of a plugin, try the following exercise:
- In your WordPress Dashboard, ensure that the "Hello Dolly" plugin has been activated.
- If applicable, use your preferred (s)FTP program to connect to your WordPress installation. ...
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