Prep Plugin for release on WordPress.org

Escape everything that should be escaped.
Add nonce checks where needed.
Sanitize all inputs.
Apply Code style changes across the codebase.
Correct many deprecation notices.
Optimize load order of many filters.

views/legacy/signup/pricing-table/plan.php

@@ -33,7 +33,7 @@ $plan_attrs = '';
 foreach ([1, 3, 12] as $type) {
 	$price       = $plan->free ? __('Free!', 'wp-multisite-waas') : str_replace(wu_get_currency_symbol(), '', wu_format_currency((((float) $plan->{'price_' . $type}) / $type)));
 	$plan_attrs .= " data-price-$type='$price'";
-} // end foreach;
+}
 
 $plan_attrs = apply_filters('wu_pricing_table_plan', $plan_attrs, $plan);
 
@@ -53,7 +53,7 @@ $plan_attrs = apply_filters('wu_pricing_table_plan', $plan_attrs, $plan);
 	<?php if ($plan->is_free()) : ?>
 
 	<h5>
-		<span class="plan-price"><?php _e('Free!', 'wp-multisite-waas'); ?></span>
+		<span class="plan-price"><?php esc_html_e('Free!', 'wp-multisite-waas'); ?></span>
 	</h5>
 
 	<?php elseif ($plan->is_contact_us()) : ?>
@@ -101,7 +101,7 @@ $plan_attrs = apply_filters('wu_pricing_table_plan', $plan_attrs, $plan);
 		} else {
 			echo "<li class='total-price total-price-$freq'>$text</li>";
 		}
-	} // end foreach;
+	}
 
 	/**
 	 * Loop and Displays Pricing Table Lines