Custom php class of looks for and to modify xml documents
- 2020-05-30 19:43:22
- OfStack
Recently, I watched the teaching video of PHP, in which I talked about PHP operation xml document and learned a little about DOMDocument class. I can't understand the manual because it's all in English. However, I still wrote a class to find the xml node and modify the value of the node. The background explanation is finished, and the code is as follows:
/*
<?xml version="1.0" encoding="UTF-8"?>
< The class >
< students number="101">
< The name > The Monkey King </ The name >
< The name > Sun walkers </ The name >
< age > A clear and mischievous person a clear and mischievous person </ age >
< introduce ></ introduce >
</ students >
< students number="102">
< The name > Bones jing </ The name >
< age >140</ age >
< introduce > Form ten thousand </ introduce >
</ students >
< students number="103">
< The name > The pig 8 quit </ The name >
< The name > Pigs can </ The name >
< age >200</ age >
< introduce > Can eat can sleep </ introduce >
</ students >
</ The class >
*/
class xmlDom{
public $version;
public $encoding;
private $xml;
private $items;
private $seachNode = '';
private $seachItem = '';
private $seachValue = '';
public $writeBytes = 0;
function __construct($xmlFile ='', $version ='1.0', $encoding = 'UTF-8'){
$this->version = $version;
$this->encoding = $encoding;
$this->xml = new DOMDocument($version, $encoding);
if($xmlFile)$this->xml->load($xmlFile);
}
function getRootEle($rootTag){
$this->xmlRoot = $this->xml->getElementsByTagName($rootTag)->item(0);
}
function getSeachItem($itemsTag, $seachNode, $seachValue){
$this->items = $this->xml->getElementsByTagName($itemsTag);
$this->items->length;
for($i=0; $i<$this->items->length; $i++){
$item = $this->items->item($i);// The element
$node = $item->getElementsByTagName($seachNode);// node
for($j = 0; $j< $node->length; $j++){
$subNode = $node->item($j);
if($seachValue == $subNode->nodeValue){
$this->seachNode = $subNode;
$this->seachItem = $item;
$this->seachValue = $subNode->nodeValue;
break(2);
}
}
}
return ($this->seachNode) ? true : false;
}
function update($nodeValue, $nodeTag = '',$append = false, $index = 0){
if($append){
if($nodeTag)
$this->seachItem->getElementsByTagName($nodeTag)->item($index)->nodeValue += $nodeValue;
else
$this->seachNode->nodeValue += $nodeValue;
}else{
if($nodeTag)
$this->seachItem->getElementsByTagName($nodeTag)->item($index)->nodeValue = $nodeValue;
else
$this->seachNode->nodeValue = $nodeValue;
}
}
function save($filename){
$this->writeBytes = $this->xml->save($filename);
return ($this->writeBytes) ? true : false;
}
}
$test = new xmlDom('student.xml');
$test->getSeachItem(' students ',' age ','103');// find age =103 The pig 8 quit
$test->update(' The little pig ', ' The name ', false, 1); // The pig 8 To quit the first 2 Name change: small pig pig
$test->save('new.xml'); // Save to a new file