How to Add Products Per Page Dropdown to Woocommerce

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This is going to be a very quick tutorial that will show you how to add the ability to Woocommerce for users to select the amount of products shown per page.

We will be using the built in Woocommerce hooks and filters and set a cookie via php so the browser can remember the selection across the website. We will be trying to add this into a plugin in the near future but until that time, follow along and edit as you see fit.
Major thanks to bcworkz for his help with setting the cookies and just being awesome!

so here we go, in your themes functions.php file let’s add the following little snippet:

// Lets create the function to house our form
remove_action( 'woocommerce_before_shop_loop', 'woocommerce_catalog_ordering', 30 );

function woocommerce_catalog_page_ordering() {
<?php echo '<span class="itemsorder">Items Per Page:' ?>
    <form action="" method="POST" name="results" class="woocommerce-ordering">
    <select name="woocommerce-sort-by-columns" id="woocommerce-sort-by-columns" class="sortby" onchange="this.form.submit()">
//Get products on page reload
if  (isset($_POST['woocommerce-sort-by-columns']) && (($_COOKIE['shop_pageResults'] <> $_POST['woocommerce-sort-by-columns']))) {
        $numberOfProductsPerPage = $_POST['woocommerce-sort-by-columns'];
          } else {
        $numberOfProductsPerPage = $_COOKIE['shop_pageResults'];
//  This is where you can change the amounts per page that the user will use  feel free to change the numbers and text as you want, in my case we had 4 products per row so I chose to have multiples of four for the user to select.
			$shopCatalog_orderby = apply_filters('woocommerce_sortby_page', array(
			//Add as many of these as you like, -1 shows all products per page
			  //  ''       => __('Results per page', 'woocommerce'),
				'20' 		=> __('20', 'woocommerce'),
				'-1' 		=> __('All', 'woocommerce'),

		foreach ( $shopCatalog_orderby as $sort_id => $sort_name )
			echo '<option value="' . $sort_id . '" ' . selected( $numberOfProductsPerPage, $sort_id, true ) . ' >' . $sort_name . '</option>';

<?php echo ' </span>' ?>
// now we set our cookie if we need to
function dl_sort_by_page($count) {
  if (isset($_COOKIE['shop_pageResults'])) { // if normal page load with cookie
     $count = $_COOKIE['shop_pageResults'];
  if (isset($_POST['woocommerce-sort-by-columns'])) { //if form submitted
    setcookie('shop_pageResults', $_POST['woocommerce-sort-by-columns'], time()+1209600, '/', '', false); //this will fail if any part of page has been output- hope this works!
    $count = $_POST['woocommerce-sort-by-columns'];
  // else normal page load and no cookie
  return $count;
add_action( 'woocommerce_before_shop_loop', 'woocommerce_catalog_page_ordering', 20 );


I tried to keep it well documented so if you have any questions feel free to let me know and I can make the edits as they come. I hope this helps, Because I wanted this located next to the “Sort by” dropdown I used the “before_shop_loop” action then styled it in place via css. You can always change this depending on your needs by just changing that hook.