WooCommerce – Change number of displayed upsells on product pages

	add_filter( 'woocommerce_upsell_display_args', 'custom_woocommerce_upsell_display_args' );

	function custom_woocommerce_upsell_display_args( $args ) {
	$args['posts_per_page'] = 5; // Change this number
	$args['columns'] = 5; // This is the number shown per row.
	return $args;
	}

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functions.php

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