is_non_empty_string_or_stringable( $html ) ) { if ( \is_int( $html ) || \is_float( $html ) ) { return (string) $html; } return ''; } return \strip_tags( $html, '

' ); } /** * Strips the tags in a smart way. * * @param string $html The original HTML. * * @return string The sanitized HTML. / public function smart_strip_tags( $html ) { if ( ! $this->is_non_empty_string_or_stringable( $html ) ) { if ( \is_int( $html ) || \is_float( $html ) ) { return (string) $html; } return ''; } // Replace all new lines with spaces. $html = \preg_replace( '/(\r|\n)/', ' ', $html ); // Replace
tags with spaces. $html = \preg_replace( '//i', ' ', $html ); // Replace closing
and other tags with the same tag with a space after it, so we don't end up connecting words when we remove them later. $html = \preg_replace( '/<\/(p|div|h\d)>/i', ' ', $html ); // Replace list items with list identifiers so it still looks natural. $html = \preg_replace( '/(]>)/i', '$1• ', $html ); // Strip tags. $html = \wp_strip_all_tags( $html ); // Replace multiple spaces with one space. $html = \preg_replace( '!\s+!', ' ', $html ); return \trim( $html ); } /** * Verifies that the received input is either a string or stringable object. * * @param string $html The original HTML. * * @return bool */ private function is_non_empty_string_or_stringable( $html ) { return ( \is_string( $html ) || ( \is_object( $html ) && \method_exists( $html, '__toString' ) ) ) && ! empty( $html ); } }