关于simpleXML_load_file

i am new php developer and i have a question for you.

i try to do this:

$bookXML = simpleXML_load_file("<book_reference>
                                    <number>19761</number>
                               </book_reference>",'SimpleXMLElement', LIBXML_NOCDATA );
 if($bookXML==FALSE)
       echo  '<br> false';

and take fale!

can you help me?

i use php 5.4.7

You should use simplexml_load_string because you are trying to generate the simple xml element object using the string instead of a file

simplexml_load_string — Interprets a string of XML into an object