protected function _get_string_value( $key ) {
		if ( ! isset( $this->types[ $key ] ) || 'string' !== $this->types[ $key ] ) {
			return null;
		}

		$default = array_key_exists( $key, $this->defaults ) ? $this->defaults[ $key ] : '';

		return trim( (string) $this->store->get( $key, $default ) );
	}
protected function _get_string_value( $key ) {
		if ( ! isset( $this->types[ $key ] ) || 'string' !== $this->types[ $key ] ) {
			return null;
		}

		$default = array_key_exists( $key, $this->defaults ) ? $this->defaults[ $key ] : '';

		return trim( (string) $this->store->get( $key, $default ) );
	}
protected function _get_string_value ( $ key ) { if ( ! isset ( $ this -> types [ $ key ] ) || 'string' !== $ this -> types [ $ key ] ) { return null ; } $ default = array_key_exists ( $ key , $ this -> defaults ) ? $ this -> defaults [ $ key ] : '' ; return trim ( ( string ) $ this -> store -> get ( $ key , $ default ) ) ; }
Getter for string values.

@param  string $key Option key.

@return string|null
Getter for string values .