JezK

Edit File: RichTextSanitizerUtil.php

<?php namespace WeDevs\Dokan\Utilities; /** * Utility class for cleaning and normalizing rich text content. * * @since 4.3.1 */ class RichTextSanitizerUtil { /** * Sanitize and clean rich text content. * * Strips all HTML tags, decodes HTML entities, and removes special/invisible * characters such as BOMs, zero-width spaces, and control characters. * * @since 4.3.1 * * @param string $text The text to sanitize and clean. * * @return string Sanitized and cleaned plain text. */ public static function sanitize_richtext_content( string $text ): string { $text = wp_strip_all_tags( $text ); $text = html_entity_decode( $text, ENT_QUOTES | ENT_HTML5, 'UTF-8' ); $text = self::replace_richtext_chars( $text ); $text = trim( $text ); /** * Filter for sanitizing and cleaning rich text content. * * Allows external modification of the cleaned rich text content. * * @since 4.3.1 * * @param string $text The cleaned text. */ return apply_filters( 'dokan_sanitize_richtext_content', $text ); } /** * Replace rich text special characters. * * @since 4.3.1 * * @see sitepress-multilingual-cms/vendor/wpml/wpml/src/Core/Component/WordsToTranslate/Domain/Calculator/PrepareContent/Rules/UnicodeTrait.php * * @param string $text The text containing special characters. * * @return string Text with special characters replaced or removed. */ protected static function replace_richtext_chars( string $text ): string { // Remove UTF-8 BOM. $text = preg_replace( '/^\xEF\xBB\xBF/', '', $text ) ?? ''; // Remove UTF-16 BOM. $text = preg_replace( '/^(?:\xFE\xFF|\xFF\xFE)/', '', $text ) ?? ''; // Replace non-breaking space with normal space. $text = str_replace( "\xC2\xA0", ' ', $text ); // Remove zero-width and invisible Unicode characters. $text = preg_replace( '/[\x{200B}\x{200C}\x{200D}\x{2060}\x{FEFF}]/u', '', $text ) ?? ''; // Remove control characters except \t (\x09) and \n (\x0A). $text = preg_replace( '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/u', '', $text ) ?? ''; return $text; } }