shaunpalmer

<meta name="robots" content="" />
Max image preview large 

They can be combined, for example:

<meta name="robots" content="max-snippet:50, max-image-preview:large" />

shaunpalmer

Paste this code into your functions.php file for sessions:

function register_my_session()
{
  if( !session_id() )
  {
    session_start()
  }
}

shaunpalmer

Paste this code into your functions.php file for sessions:

function register_my_session()
{
  if( !session_id() )
  {
    session_start()
  }
}

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<?php

function add_custom_header() {
    if (is_front_page() || is_home()) {
        ?>
        <header id="custom-header">
            <!-- Your custom header content here -->
        </header>
        <?php
    }

shaunpalmer

<?php

/*
WordPress Path Discovery Utility Class
To use this utility, you would initialize it in your plugin's main file like this:
require_once 'path/to/WP_Asset_Utility.php';
initialize_asset_utility();
*/
class WP_Asset_Utility {
    private $base_path;

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<?php

/**
 * Configuration class to manage settings
 */
class WP_Error_Handler_Config {
    private $config;

    public function __construct(array $config = []) {
        $this->config = array_merge([

shaunpalmer

In this article I'm going to walk you through process of creating Wordpress plugins. First I'm going to talk about some of the basic concepts in Wordpress plugin development like the actions, hooks, and API's that makes up Wordpress. Then were going to build a plugin where we apply some of the concepts and best practices in developing Wordpress plugins.

###Prerequisites

In order to fully benefit from this tutorial you should have a basic knowledge on PHP. As Wordpress is running on PHP and most of the code that we will be writing will be on PHP. A little bit of knowledge on HTML, CSS and JavaScript is also helpful but not required for this tutorial.

shaunpalmer

<?php
/**
 * Detect if a WordPress plugin is active
 * A function you can use to check if plugin is active/loaded for your plugins/themes
 * @link //gist.github.com/llgruff/c5666bfeded5de69b1aa424aa80cc14f
 */

// When coding plugins that rely on another one, like Private Content for bbPress or Visual Attributes for WooCommerce, you need to make if the WordPress Plugin is active to initialize your plugin routines or display a notice saying that the required plugin must be activated. In this tutorial we’ll see how to detect whether a certain plugin is active in a couple of ways.

## 1. Check whether a certain class or function or constant exists

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<?php
/**
 * @package MyPlugin
 */

//Before playing with this file, see the other file in the gist. Read the comments.
if( ! class_exists( 'MyPlugin' ) ) {

	class MyPlugin {

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<?php
/*
Plugin name: WordPress Plugin Template - Extra Post Info
Plugin URI: http://veitchdigital.com/
Description: A simple plugin starter template to add extra info to posts excerpt previews, after the excerpt-content. 
Author: Ryan Veitch
Author http://veitchdigital.com/
Version: 0.1
*/