Create your own pluggin for your custom theme functions

Firstly, navigate to your WordPress website via FTP
From there, you should navigate to wp-content/plugins
Create a new folder
Create a PHP file with the same name within your plugin’s folder
Insert the following code into your new PHP file

<!--?php 
/** * Plugin Name: Custom Functions Plugin 
* Description: This plugin contains all of my awesome custom functions. 
* Author: Your Name 
* Version: 0.1 */ 
/* Your code goes below here. */ /* Your code goes above here. */ 
?-->

<!--?php

/** * Plugin Name: Custom Functions Plugin

* Description: This plugin contains all of my awesome custom functions.

* Author: Your Name

* Version: 0.1 */

/* Your code goes below here. */ /* Your code goes above here. */

?-->

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