For phpdom, do not use DOMDocument-> load to directly read the xml written in the current php

Can php dom be directly read and written in the current php xml without using DOMDocument-& gt; load & nbsp; can dom be used without using DOMDocument-& gt; load & nbsp; reads files from other locations, and directly reads the xml written in the current php file as a string, & nbsp; in addition, whether the php dom can be directly read from the xml file written in the current php without using DOMDocument-> load
Can php dom be used to read files from other locations without using DOMDocument-> load, but directly read the xml written in string in the current php file, is there any way to print the xml content in DOMDocument directly on the webpage without saving it to another file. No way found. please tell me. Thank you.
------ Solution --------------------
Manual:
Class DOMDocument {
Bool loadXML (string source [, int options])
}
That is, DOMDocument-> loadXML ('....')

DOMDocument-> save no matter whether the file name to be saved is used as a parameter, the corresponding XML string is returned.
Echo DOMDocument-> save ()