code custom quantity shop page show drop down (ok)

<?php
// WooCommerce shop page show per page drop down
function flipmart_woocommerce_catalog_page_ordering() {
?>
<div class="lbl-cnt">
<?php echo '<span class="lbl">Show</span>' ?>
<form action="" method="POST" name="results" class="fld inline">
<select name="woocommerce-sort-by-columns" id="woocommerce-sort-by-columns" class="sortby" onchange="this.form.submit()">
<?php
//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'),
'12' 		=> __('12', 'flipmart'),
'20' 		=> __('20', 'flipmart'),
'30' 		=> __('30', 'flipmart'),
'40' 		=> __('40', 'flipmart'),
'50' 		=> __('50', 'flipmart'),
'-1' 		=> __('All', 'flipmart'),
));
foreach ( $shopCatalog_orderby as $sort_id => $sort_name )
echo '<option value="' . $sort_id . '" ' . selected( $numberOfProductsPerPage, $sort_id, true ) . ' >' . $sort_name . '</option>';
?>
</select>
</form>
</div>
<?php
}
// now we set our cookie if we need to
function dl_sort_by_page($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, '/', 'www.your-domain-goes-here.com', 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_filter('loop_shop_per_page','dl_sort_by_page');