如何计算孩子的名字时知道它的名字simpleXML [关闭]

i'm trying to count the number of children of a parent in an xml with SimpleXML and i know the name of child to count.How can i do this? Thanks in advance

$xml is the simple XML variable name

parent is the name of the parent node

children is the name of the children node

echo  count($xml->parent->children);

From PHP 5.3+ you can use SimpleXMLElement::count

Or

$sXML= new SimpleXMLElement($xml);
$child = $sXML->children();
echo count($child);