(PHP 5 <= 5.3.0, PECL ming SVN)
SWFDisplayItem::skewX — Sets the X-skew
$ddegrees
   )This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.
   swfdisplayitem::skewx() adds ddegrees
   to current x-skew. 
  
The object may be a swfshape(), a swfbutton(), a swftext() or a swfsprite() object. It must have been added using the swfmovie::add().
No value is returned.