(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0)
XMLWriter::openURI -- xmlwriter_open_uri — Create new xmlwriter using source uri for output
面向对象风格
$uri
   )过程化风格
$uri
   )
   Creates a new XMLWriter using 
   uri for the output.  
  
uriThe URI of the resource for the output.
   面向对象风格: 成功时返回 TRUE, 或者在失败时返回 FALSE。
  
   过程化风格: Returns a new xmlwriter 资源(resource) for later use with the
   xmlwriter functions on success, FALSE on error.