";

$xml = '<?xml version="1.0" encoding="UTF-8"?><foo><bar>123</bar><bat/></foo>';

$sxml = simplexml_load_string($xml);



if ($sxml->bar) print "bar is set in obj\n";

if ($sxml['bar']) print "bar is set in array\n";

if ($sxml['xyz']) print "xyz is set in array\n";



Regular PHP prints "bar is set in obj". Quercus prints that plus the two array lines.



It surprises me that the second "if" doesn't test true in regular PHP, but the third one definitely shouldn't.