opicron

function my_searchwp_pre_search_terms( $terms, $engine )  {
	$exact_match = get_posts( array(
		'post_type' => 'product',
		'nopaging'  => true,
		'fields'    => 'ids',
		'meta_query' => array(
			array(
				'key' => '_sku',
				'value' => $terms,

opicron

<?php

function my_get_product_id_by_sku( $sku = false ) {
 
    global $wpdb;
 
    if( !$sku )
        return null;
 
    $product_id = $wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE meta_key='_sku' AND meta_value='%s' LIMIT 1", $sku ) );

opicron

/*
 * Example adds certain named Product Attribute fields to the product Edit screen ready for completion.
 * (Pre-requisite )
 * This saves the Shop Admin having to add them manually.
 *
 * Why might you want to do this instead of adding Custom fields?  There's plenty of nice documentation on adding custom fields
 * for example: http://www.remicorson.com/mastering-woocommerce-products-custom-fields/
 *
 * Well a Product Attributes are a built in WooCommerce feature, using Terms which are a built in Wordpress feature.
 * - no add-ons required

opicron

<?php
//Exclude child products from searches
function my_searchwp_exclude( $ids, $engine, $terms ){
	$excluded_product_ids = get_posts( array(
		'post_type' => 'product',
		'nopaging'  => true,
		'fields'    => 'ids',
		'meta_query' => array(
			array(
				'key' => '_children',

opicron

<?php

function filter_the_posts($posts, &$wp_query) {
	if( is_search() )
	{
		//make array of product ids
		$ids = array();
		foreach ($posts as $key => $post)
		{			
			$ids[$post->ID] = $post->ID;