original_string: public function viewport($content = null)
      {
          if (empty($content)) {
              $content = 'width=device-width, initial-scale=1.0';
          }
          if (is_array($content)) {
              $content = implode(', ', $content);
          }
          return $this->meta(array('name' => 'viewport', 'content' => $content));
      }
code: public function viewport($content = null)
      {
          if (empty($content)) {
              $content = 'width=device-width, initial-scale=1.0';
          }
          if (is_array($content)) {
              $content = implode(', ', $content);
          }
          return $this->meta(array('name' => 'viewport', 'content' => $content));
      }
code_tokens: public function viewport ( $ content = null ) { if ( empty ( $ content ) ) { $ content = 'width=device-width, initial-scale=1.0' ; } if ( is_array ( $ content ) ) { $ content = implode ( ', ' , $ content ) ; } return $ this -> meta ( array ( 'name' => 'viewport' , 'content' => $ content ) ) ; }
docstring: Viewport meta.
  
  @param mixed $content
  @return string
docstring_tokens: Viewport meta .