Sanitize HTML

sanitize-html.php

<?php 
/**
 * The force_balance_tags() function ensures that no tags are left unclosed, 
 * while the wp_kses_post() ensures that only safe tags make it into the database 
 * (the same tags that are allowed in a standard WordPress post.) 
 * @param int $input. 
 * @return int sanitizes html input to display output. force_balance_tags checks to see if any html tags are unclosed.
 */
function example_sanitize_text( $input ) {
	return wp_kses_post( force_balance_tags( $input ) );
}