PHP解析xml格式数据工具类示例

　　本文实例讲述了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：

　　 class ome_xml { /** * xml资源 * * @var resource * @see xml_parser_create() */ public $parser; /** * 资源编码 * * @var string */ public $srcenc; /** * target encoding * * @var string */ public $dstenc; /** * the original struct * * @access private * @var array */ public $_struct = array(); /** * Constructor * * @access public * @param mixed [$srcenc] source encoding * @param mixed [$dstenc] target encoding * @return void * @since */ function SofeeXmlParser($srcenc = null, $dstenc = null) { $this->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, $tagname, $value, $attributes); break; case cdata: // node has CDATA after one of its 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：《PHP针对XML文件操作技巧总结》、《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《PHP错误与异常处理方法总结》、《PHP基本语法入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

　　希望本文所述对大家PHP程序设计有所帮助。