(PHP 5, PHP 7)
DOMDocument::load — Load XML from a file
Loads an XML document from a file.
Unix style paths with forward slashes can cause significant performance degradation on Windows systems; be sure to call realpath() in such a case.
filenameThe path to the XML document.
optionsBitwise OR of the libxml option constants.
   Returns TRUE on success or FALSE on failure.  If called statically, returns a
   DOMDocument or FALSE on failure.
  
   If an empty string is passed as the filename
   or an empty file is named, a warning will be generated. This warning
   is not generated by libxml and cannot be handled using libxml's error
   handling functions.
  
This method may be called statically, but will issue an E_STRICT error.
Example #1 Creating a Document
<?php
$doc = new DOMDocument();
$doc->load('book.xml');
echo $doc->saveXML();
?>