Edit File: sanitize.php
<?php if ( ! defined( 'ABSPATH' ) ) { die; } // Cannot access directly. /** * * Sanitize * Replace letter a to letter b * * @since 1.0.0 * @version 1.0.0 * */ if ( ! function_exists( 'csf_sanitize_replace_a_to_b' ) ) { function csf_sanitize_replace_a_to_b( $value ) { return str_replace( 'a', 'b', $value ); } } /** * * Sanitize title * * @since 1.0.0 * @version 1.0.0 * */ if ( ! function_exists( 'csf_sanitize_title' ) ) { function csf_sanitize_title( $value ) { return sanitize_title( $value ); } }