PHP uses DOMDocument to manipulate XML files

Using DOMDocument to read an XML file requires the following methods and properties:

Method:

1: Read XML file: Load ()

2: Array of objects getting tags: getelementbytagname ()

3: Index of Object array: item ()

Property:

1: Get the text of a property or node: NodeValue

2: Get the attribute name or node name: NodeName

2: Get the child node collection for this node: childNodes

3: Gets the collection of properties for this node: attributes

instance XML file (a.xml):

1 <?XML version= "1.0 encoding=" UTF-8 "?>2 <peopleNation= "Han" City= "Mars">3     <XiaohuaCollege= "Qinghua">4         <name>Xiaohua</name>5         < Age>12</ Age>6         <Sex>Man</Sex>7     </Xiaohua>8     <xiaomingCollege= "Beida">9         <name>Xiao ming</name>Ten         < Age>15</ Age> One         <Sex>Man</Sex> A     </xiaoming> -     <XiaoqiangCollege= "Jiaotong"> -         <name>Jack bauer</name> the         < Age>13</ Age> -         <Sex>Man</Sex> -     </Xiaoqiang> - </people>    

PHP uses DOMDocument to manipulate XML files

<?PHP$dom=NewDomDocument (); $dom->load (A.XML); $people=$dom->getelementbytagname (' People ');//gets an array of people nodes
    $people->item (0);//Gets the first people node    $people->item (0)->childnodes;//get all child nodes of the first people node    $people->item (0)->attributes;//get all the properties of the first People node
    $people->item (0)->childnodes->item (0);//gets the first node of the first People node, the Xiaohua node    $people->item (0)->attributes->item (0);//gets the first property of the first people node, which is the nation property.     $people->item (0)->childnodes->item (0)->childnodes->item (0);//Gets the name node in the first node of the first people node
    Echo $people->item (0)->attributes->item (0)->nodename;//output string: Nation    Echo $people->item (0)->attributes->item (0)->nodevalue//output string: Han    Echo $people->item (0)->childnodes->item (0)->childnodes->item (0)->nodename;//Output string: Name 　　 Echo $people->item (0)->childnodes->item (0)->childnodes->item (0)->nodevalue;//output string: Xiao Hua

foreach ($people->item (0)->attributes as $key + = $value) {//Traverse node
echo $key;//First output string: Nation, second output string: City
echo $value->nodevalue;//First output string: Han, second output string: Mars
}

PHP uses DOMDocument to manipulate XML files