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 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：
http://tools.jb51.net/code/xmljson
在线格式化xml/在线压缩xml：
http://tools.jb51.net/code/xmlformat
xml在线压缩/格式化工具：
http://tools.jb51.net/code/xml_format_compress
xml代码在线格式化美化工具：
http://tools.jb51.net/code/xmlcodeformat
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以上就是php解析xml格式数据工具类示例讲解的详细内容。