PHP操作XML的知识点记录(DOMDocument)

   
        吴边
        13222053785
   
   
        吴边2
        15151981159
   
   
        test
        15077887624
   
   
        撒旦发撒旦发
        132423142134
   
   
        阿斯顿飞
        1234123421342134
   

$doc=new DOMDocument("1.0","utf-8");  #声明文档类型
$doc->formatOutput=true;              #设置可以输出操作
#声明根节点，最好一个XML文件有个跟节点
$root=$doc->createElement("phoneBook");#创建节点对象实体
$doc->appendChild($root);            #把节点添加进来
  
$person=$doc->createElement("person");  #创建节点对象实体  
$root->appendChild($person);    #把节点添加到root节点的子节点
  
$contactName=$doc->createElement("name");
$person->appendChild($contactName);
  
$contactNum=$doc->createElement("tel");
$person->appendChild($contactNum);
  
$contactName->appendChild($doc->createTextNode($name));
$contactNum->appendChild($doc->createTextNode($tel));
  
$doc->save($filename); #保存路径

$doc = new DOMDocument();  #声明文档类型
$doc -> load($filename);
$root = $doc->getElementsByTagName("phoneBook")->item(0);
      
$person = $doc->createElement("person");
  
$contactName = $doc->createElement("name");
$contactName->nodeValue = $name;
  
$contactNum = $doc->createElement("tel");
$contactNum->nodeValue = $tel;
  
$person -> appendChild($contactName);
$person -> appendChild($contactNum);
$root -> appendChild($person);
$doc->save($filename); #保存路径

$xmldoc = new DOMDocument();
$xmldoc -> load("contacts.xml");
$root = $xmldoc->getElementsByTagName("person");
  
foreach($root as $v){
    echo $v->getElementsByTagName("name")->item(0)->nodeValue."
";
}