本篇章节讲解PHP解析xml格式数据工具类。分享给大家供大家参考，具体如下：

srcenc = $srcenc;
$this->dstenc = $dstenc;
// initialize the variable.
$this->parser = null;
$this->_struct = array();
}
/**
* Parses the XML file
*
* @access public
* @param string [$file] the XML file name
* @return void
* @since
*/
function xml2array($file) {
//$this->SofeeXmlParser(‘utf-8’);
$data = file_get_contents($file);
$this->parseString($data);
return $this->getTree();
}
function xml3array($file){
$data = file_get_contents($file);
$this->parseString($data);
return $this->_struct;
}
/**
* Parses a string.
*
* @access public
* @param string data XML data
* @return void
*/
function parseString($data) {
if ($this->srcenc === null) {
$this->parser = xml_parser_create();
} else {
if($this->parser = xml_parser_create($this->srcenc)) {
return ‘Unable to create XML parser resource with ‘. $this->srcenc .’ encoding.’;
}
}
if ($this->dstenc !== null) {
@xml_parser_set_option($this->parser,XML_OPTION_TARGET_ENCODING,$this->dstenc) or die(‘Invalid target encoding’);
}
xml_parser_set_option($this->parser,XML_OPTION_CASE_FOLDING,0); // lowercase tags
xml_parser_set_option($this->parser,XML_OPTION_SKIP_WHITE,1); // skip empty tags
if (!xml_parse_into_struct($this->parser,$data,$this->_struct)) {
/*printf(“XML error: %s at line %d”,xml_error_string(xml_get_error_code($this->parser)),xml_get_current_line_number($this->parser)
);*/
$this->free();
return false;
}
$this->_count = count($this->_struct);
$this->free();
}
/**
* return the data struction
*
* @access public
* @return array
*/
function getTree() {
$i = 0;
$tree = array();
$tree = $this->addNode(
$tree,$this->_struct[$i][‘tag’],(isset($this->_struct[$i][‘value’])) ? $this->_struct[$i][‘value’] : ”,(isset($this->_struct[$i][‘attributes’])) ? $this->_struct[$i][‘attributes’] : ”,$this->getChild($i)
);
unset($this->_struct);
return $tree;
}
/**
* recursion the children node data
*
* @access public
* @param integer [$i] the last struct index
* @return array
*/
function getChild(&$i) {
// contain node data
$children = array();
// loop
while (++$i < $this->_count) {
// node tag name
$tagname = $this->_struct[$i][‘tag’];
$value = isset($this->_struct[$i][‘value’]) ? $this->_struct[$i][‘value’] : ”;
$attributes = isset($this->_struct[$i][‘attributes’]) ? $this->_struct[$i][‘attributes’] : ”;
switch ($this->_struct[$i][‘type’]) {
case ‘open’:
// node has more children
$child = $this->getChild($i);
// append the children data to the current node
$children = $this->addNode($children,$tagname,$value,$attributes,$child);
break;
case ‘complete’:
// at end of current branch
$children = $this->addNode($children,$attributes);
break;
case ‘cdata’:
// node has CDATA after one of it’s children
$children[‘value’] .= $value;
break;
case ‘close’:
// end of node,return collected data
return $children;
break;
}
}
//return $children;
}
/**
* Appends some values to an array
*
* @access public
* @param array [$target]
* @param string [$key]
* @param string [$value]
* @param array [$attributes]
* @param array [$inner] the children
* @return void
* @since
*/
function addNode($target,$key,$value = ”,$attributes = ”,$child = ”) {
if (!isset($target[$key][‘value’]) && !isset($target[$key][0])) {
if ($child != ”) {
$target[$key] = $child;
}
if ($attributes != ”) {
foreach ($attributes as $k => $v) {
$target[$key][$k] = $v;
}
}
$target[$key][‘value’] = $value;
} else {
if (!isset($target[$key][0])) {
// is string or other
$oldvalue = $target[$key];
$target[$key] = array();
$target[$key][0] = $oldvalue;
$index = 1;
} else {
// is array
$index = count($target[$key]);
}
if ($child != ”) {
$target[$key][$index] = $child;
}
if ($attributes != ”) {
foreach ($attributes as $k => $v) {
$target[$key][$index][$k] = $v;
}
}
$target[$key][$index][‘value’] = $value;
}
return $target;
}
/**
* Free the resources
*
* @access public
* @return void
**/
function free() {
if (isset($this->parser) && is_resource($this->parser)) {
xml_parser_free($this->parser);
unset($this->parser);
}
}
}

PS：这里再为大家提供几款关于xml操作的在线工具供大家参考使用：

在线XML/JSON互相转换工具：

在线格式化XML/在线压缩XML：

XML

在线压缩/格式化工具：

XML

代码在线格式化美化工具：

更多关于PHP相关内容感兴趣的读者可查看本站专题：《》、《》、《》、《》、《》、《》、《》及《》

希望本文所述对大家PHP程序设计有所帮助。