Understanding Plugins and Their Role in Website Customization: What is a Plugin in WordPress?

What is a Plugin in WordPress?

WordPress core functionality is extended by plugins, which are packages of code. WordPress plugins consist of PHP code and can also contain other components such as images, CSS, and JavaScript.

Building additional functionality on top of what WordPress already offers can be achieved by creating your own plugin, which extends WordPress. As an example, it’s possible to create a plugin that displays links to the ten most recent posts on your site.

The code below is a basic WordPress plugin that adds the Google Analytics tracking code into your WordPress site <head> section.

The Google Analytics tracking code will now be added to the element of each page on your WordPress website. Before using this plugin, make sure you have a Google Analytics account and property set up.

Below code you can add to functions.php, if you dont need plugin for small code.

<?php
/*
Plugin Name: Google Analytics Plugin - TheWPStarter 
Description: A Google Analytics code
Version: 1.0
Author: TheWPStarter
*/

// Function to add Google Analytics code to head
function add_google_analytics_code() {
    ?>
    <!-- Global site tag (gtag.js) - Google Analytics -->
    <script async src="https://www.googletagmanager.com/gtag/js?id=YOUR_ANALYTICS_CODE"></script>
    <script>
        window.dataLayer = window.dataLayer || [];
        function gtag(){dataLayer.push(arguments);}
        gtag('js', new Date());
        gtag('config', 'YOUR_ANALYTICS_CODE');
    </script>
    <?php
}

// Hook to add code to the head
add_action('wp_head', 'add_google_analytics_code');
?>

you can use WordPress boilerplate code for your plugin development1

  1. https://github.com/DevinVinson/WordPress-Plugin-Boilerplate ↩︎
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