Allow <iframe> in content around wp_kses_post functions

allow-iframe-wp-kses-post.php

<?php
/**
 * Allow <iframe> code in wp_kses_post calls.
 * Useful for embedding videos in Memberlite theme banner descriptions.
 *
 * Add this code to your site by following this guide - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 function my_pmpro_allow_iframe_wp_kses_post( $tags, $context ) {

	if ( 'post' === $context ) {
		$tags['iframe'] = array(
			'src'             => true,
			'height'          => true,
			'width'           => true,
			'frameborder'     => true,
			'allowfullscreen' => true,
		);
	}

	return $tags;
}

add_filter( 'wp_kses_allowed_html', 'my_pmpro_allow_iframe_wp_kses_post', 10, 2 );