(no version information, might be only in CVS)
DOMDocument->loadXML() -- 
   Load XML from a string
  
说明
class 
DOMDocument { 
bool 
loadXML ( string source )
}
   Loads an XML document from a string. 
  
   This method may also be called statically to load and create a 
   DOMDocument object. The static invocation may be 
   used when no DOMDocument properties need to be set 
   prior to loading.