php将 xml解析成array 示例代码

【实例简介】

/**
* 类功能：解释XML文件，并转化为数组
* @使用例子：
$xml = new Others_XmltoArray('file.xml');
print_r($xml->getArray());
*/

【核心代码】

<?php
	/**
	 * 类功能：解释XML文件，并转化为数组
	 * @使用例子：
		$xml = new Others_XmltoArray('file.xml');
		print_r($xml->getArray());
	 */
	
	class Others_XmltoArray
	{
		private $m_parser = NULL;
		private $m_arrxml = array();
		private $m_arr = array();
		private $m_lasetag = array();
		/**
		*为了统一xml输出数组的格式,从2012-10-08起统一使用方法toArray2,此时参数flag设置为1
		*/
		public function __construct( $data,$flag=0 )
		{
			if (preg_match('/^(\xef\xbb\xbf)?\s*<\?xml/i', $data)) {
				$xml = $data;
			} else {
				$xml = @file_get_contents($data);
			}
			$this->m_parser = xml_parser_create ();
			xml_parser_set_option($this->m_parser, XML_OPTION_CASE_FOLDING, 0);
			xml_parser_set_option($this->m_parser, XML_OPTION_SKIP_WHITE, 1);
			xml_parse_into_struct($this->m_parser, $xml, $this->m_arrxml);
			if($flag == 1)
				$this->toArray2();
			else 
				$this->toArray();
		}
		
		public function __destruct()
		{
			xml_parser_free( $this->m_parser );
		}
		
		/**
		 * 转化为数组
		 * @author wubingjie
		 * @return 
		 */
		private function toArray()
		{
			$arrpare = array();
			
			foreach ($this->m_arrxml as $v)
			{
				if( $v['type'] == 'open' )
				{
					$this->m_lasetag[$v['level']] = strtoupper($v['tag']);
				}
				
				if ( $v['type'] == 'complete' )
				{
					$arr = $this->getPareArray( $v['level']-1, strtoupper($v['tag']) );
					$arrpare[] = $arr;
					
					$arrnode = array();
					$streval = '';
	
					if( isset($v['attributes'] ))
					{
						$streval .= '$arrnode[\'ATTR\']=';
						$streval .= 'array_change_key_case($v[\'attributes\'],CASE_UPPER);';
					}
	
					if( isset($v['value'] ))
					{
						$streval .= '$arrnode[\'VALUE\']=$v[\'value\'];';
					}			
	
					$streval .= $arr.'[] = $arrnode;';
					eval($streval);								
				}
	
			}
			
			if( count($arrpare) != 0 )
			{
				foreach ( $arrpare as $v )
				{
					$str = "if(count(".$v.")==1)";
					$str .= "{".$v." = ".$v."[0];}";
					eval($str);
				}
			}
		}

		/**
		 * 转化为数组(针对单节点Bug的处理)
		 * @author shuw
		 * @return 
		 */
		private function toArray2()
		{
			$arrpare = array();
			
			foreach ($this->m_arrxml as $v)
			{
				if( $v['type'] == 'open' )
				{
					$this->m_lasetag[$v['level']] = strtoupper($v['tag']);
				}
				
				if ( $v['type'] == 'complete' )
				{
					$arr = $this->getPareArray( $v['level']-1, strtoupper($v['tag']) );
					$arrpare[] = $arr;
					
					$arrnode = array();
					$streval = '';
	
					if( isset($v['attributes'] ))
					{
						$streval .= '$arrnode[\'ATTR\']=';
						$streval .= 'array_change_key_case($v[\'attributes\'],CASE_UPPER);';
					}
	
					if( isset($v['value'] ))
					{
						$streval .= '$arrnode[\'VALUE\']=$v[\'value\'];';
					}			
	
					$streval .= $arr.'[] = $arrnode;';
					eval($streval);								
				}
	
			}
		}
				
		/**
		 * 建立数组结构，并返回当前数组字符串
		 * @author wubingjie
		 * @param int $n	层次
		 * @param int $v	标记名称
		 * @return string	当前数组字符串
		 */
		private function getPareArray( $n ,$v )
		{
			$str = '$this->m_arr';
			for ($i = 1; $i <= $n; $i  )
			{
				$str .='[\''.$this->m_lasetag[$i].'\']';
			}
			$strtemp = $str."['".$v."']";
			eval("if(!isset(".$strtemp.")){".$strtemp." = array();}");
			return $strtemp;
		}	
		
			
		
		/**
		 * 取得数组
		 * @author wubingjie
		 * @return array
		 */
		public function getArray( )
		{
			/**
			 * 编码转换
			 * 2011-8-5 日 修改create_function 函数  by wangsl
			 */
			 
			array_walk_recursive($this->m_arr, array($this,'_xml_iconv')); 
			return $this->m_arr;			
		}
		
		public function _xml_iconv(&$v,$k)
		{
				$v=iconv('utf-8', 'gb18030', $v);
		}
		
	}
?>