Writing XML using PHP have no effects after script is runned

[Zhzmoshl]

I am encountering problems writing XML files using PHP. The following is my php script to write content into an xml file. Basically, no errors have been encountered; but when I check my xml file after running the script, it is empty. Please advice. Thank you.\[code\] $doc= new DOMDocument(); $doc->load("articles.xml"); $b = $doc->createElement( "articleDraft" ); $id = $doc->createElement("id"); $id->appendChild( $doc->createTextNode( $_POST['id'] ) ); $b->appendChild( $id ); $draft=$doc->createElement("draftContent"); $draft->appendChild($doc->createTextNode($_POST['articleBody'])); $b->appendChild($draft); $time=$doc->createElement("drafTime"); $draft->appendChild($doc->createTextNode(time())); $b->appendChild($time); $doc->save("articles.xml");\[/code\]I am new to writing xml in PHP, please help me identify other problems if you find any. Thank you.