htaccess_writable() ) { return false; } require_once ABSPATH . 'wp-admin/includes/misc.php'; return (bool) insert_with_markers( $this->htaccess_path(), self::MARKER, $this->rules() ); } public function remove(): bool { $path = $this->htaccess_path(); if ( ! is_writable( $path ) ) { return false; } require_once ABSPATH . 'wp-admin/includes/misc.php'; return (bool) insert_with_markers( $path, self::MARKER, array() ); } public function nginx_snippet(): string { return <<.+\.(jpe?g|png|gif))$ { add_header Vary Accept; try_files \$bwwebpbase\$bw_webp_suffix \$uri =404; } NGX; } public function htaccess_writable(): bool { $path = $this->htaccess_path(); if ( file_exists( $path ) ) { return is_writable( $path ); } return is_writable( dirname( $path ) ); } public function rules(): array { return array( '', 'RewriteEngine On', 'RewriteCond %{HTTP_ACCEPT} image/webp', 'RewriteCond %{REQUEST_FILENAME} (?i)(.+\.(jpe?g|png|gif))$', 'RewriteCond %{REQUEST_FILENAME}.webp -f', 'RewriteRule ^ %{REQUEST_URI}.webp [T=image/webp,E=accept:1,L]', '', '', '', 'Header append Vary Accept env=accept', '', 'AddType image/webp .webp', '', ); } private function htaccess_path(): string { return get_home_path() . '.htaccess'; } }