DomDocument->xinclude Substitutes XIncludes in a DomDocument Object Description intDomDocument->xinclude &warn.experimental.func; This function substitutes XIncludes in a DomDocument object. Substitu test $xml = ' xinclude: include.xml not found '; $domxml = domxml_open_mem($xml); $domxml->xinclude(); echo $domxml->dump_mem(); ?> ]]> &example.outputs; test ]]> If include.xml doesn't exist, you'll see: xinclude:dom.xml not found ]]>