mzdebo

https://stackoverflow.com/questions/39007426/adding-programmatically-a-custom-settings-tab-to-admin-product-data-in-woocommer

// Step 1 - Adding a custom tab to the Products Metabox
add_filter( 'woocommerce_product_data_tabs', 'add_shipping_costs_product_data_tab', 99 , 1 );
function add_shipping_costs_product_data_tab( $product_data_tabs ) {
    $product_data_tabs['shipping-costs'] = array(
        'label' => __( 'Shipping costs', 'my_theme_domain' ), // translatable
        'target' => 'shipping_costs_product_data', // translatable
    );
    return $product_data_tabs;

mzdebo

/*********** 
*  Hide sku
************/
function sv_remove_product_page_skus( $enabled ) {
    if ( ! is_admin() && is_product() ) {
        return false;
    }

    return $enabled;
}

mzdebo

*/ https://rudrastyh.com/woocommerce/before-and-after-add-to-cart.html */

// Before Add to Cart Button
add_action( 'woocommerce_before_add_to_cart_button', 'misha_before_add_to_cart_btn' );
 
function misha_before_add_to_cart_btn(){
	echo 'Some custom text here';
}

// After Add to Cart Button

mzdebo

<?php
/*
Plugin Name: CI Comment Rating
Description: Adds a star rating system to WordPress comments
Version: 1.0.0
Author: The CSSIgniter Team
Author URI: https://cssigniter.com/
*/

//Enqueue the plugin's styles.

mzdebo

////////////////////////////////////////////////////////////////////////////////////
//                                                                                //
//        Create a post from every image in wordpress media gallery               //
//                                                                                //
////////////////////////////////////////////////////////////////////////////////////
//If you have the image in your media library you can just loop through them and create post via wp_insert_post.

// using wp_insert_post() function
// snippet from the Codex

mzdebo

////////////////////////////////////////////////////////////////////////////////////
//                                                                                //
//        Add media size column to media library                                  //
//                                                                                //
////////////////////////////////////////////////////////////////////////////////////

// Add custom column to book list
function wh_column( $cols ) {
    $cols["dimensions"] = "Dimensions (h)";
    return $cols;

mzdebo

Great reference for functions by Category(Posts, Categories, Custom Post Type, Pages, etc.)

note: I have found out that some functions that are available in some sources may not be available in these resources I have listed.

1. https://codex.wordpress.org/Function_Reference
2. https://developer.wordpress.org/reference/

CODING STANDARDS link

mzdebo

Code Samples for Hooks And Filters Class

<?php

/* Filter the title to add a page number if necessary.
   ------------------------------------------------------------------------------------ */

add_filter( 'wp_title', 'page_numbered_wp_title', 10, 2 );

function page_numbered_wp_title( $title, $sep ) {

mzdebo

<?php
//hierarchical 

//hook into the init action and call create_book_taxonomies when it fires
add_action( 'init', 'create_topics_hierarchical_taxonomy', 0 );

//create a custom taxonomy name it topics for your posts

function create_topics_hierarchical_taxonomy() {

mzdebo

<?php
 
/*
 * This function will get the first image in this order:
 *
 *    1) Featured image
 *    2) First image attached to post
 *    3) First image URL in the content of the post
 *    4) YouTube screenshot
 *    5) Default images for different categories [SET MANUALLY]