ThinkPHP XML格式转换成数组

XML格式转换成数组 用递归操作很简单，大家可以下载附件测试
// Xml 转 数组, 包括根键，忽略空元素和属性，尚有重大错误
public function xml_to_array( $xml )
{
$reg = "/]*?>([\\x00-\\xFF]*?)/";
if(preg_match_all($reg, $xml, $matches))
{
$count = count($matches[0]);
$arr = array();
for($i = 0; $i {
$key = $matches[1][$i];
$val = $this->xml_to_array( $matches[2][$i] ); // 递归
if(array_key_exists($key, $arr))
{
if(is_array($arr[$key]))
{
if(!array_key_exists(0,$arr[$key]))
{
$arr[$key] = array($arr[$key]);
}
}else{
$arr[$key] = array($arr[$key]);
}
$arr[$key][] = $val;
}else{
$arr[$key] = $val;
}
}
return $arr;
}else{
return $xml;
}
}


// Xml 转 数组, 不包括根键
public function xmltoarray( $xml )
{

$arr = $this->xml_to_array($xml);
$key = array_keys($arr);
return $arr[$key[0]];
}第二种方法，预防递归溢出class XML
{

public $parser = NULL;
public $document = NULL;
public $parent = NULL;
public $stack = NULL;
public $last_opened_tag = NULL;

public function XML( )
{
$this->parser = xml_parser_create( );
xml_parser_set_option( $this->parser, XML_OPTION_CASE_FOLDING, false );
xml_set_object( $this->parser, $this );
xml_set_element_handler( $this->parser, "open", "close" );
xml_set_character_data_handler( $this->parser, "data" );
}

public function destruct( )
{
xml_parser_free( $this->parser );
}

public function &parse( &$data )
{
$this->document = array( );
$this->stack = array( );
$this->parent =& $this->document;
$parsedata = xml_parse( $this->parser, $data, true ) ? $this->document : NULL;
return $parsedata;
}

public function open( &$parser, $tag, $attributes )
{
$this->data = "";
$this->last_opened_tag = $tag;
if ( is_array( $this->parent ) && array_key_exists( $tag, $this->parent ) )
{
if ( is_array( $this->parent[$tag] ) && array_key_exists( 0, $this->parent[$tag] ) )
{
$key = count_numeric_items( $this->parent[$tag] );
}
else
{
if ( array_key_exists( "{$tag} attr", $this->parent ) )
{
$arr = array(
"0 attr" => $this->parent["{$tag} attr"],
$this->parent[$tag]
);
unset( $this->parent["{$tag} attr"] );
}
else
{
$arr = array(
$this->parent[$tag]
);
}
$this->parent[$tag] =& $arr;
$key = 1;
}
$this->parent =& $this->parent[$tag];
}
else
{
$key = $tag;
}
if ( $attributes )
{
$this->parent["{$key} attr"] = $attributes;
}
$this->parent =& $this->parent[$key];
$this->stack[] =& $this->parent;
}

public function data( &$parser, $data )
{
if ( $this->last_opened_tag != NULL )
{
$this->data .= $data;
}
}

public function close( &$parser, $tag )
{
if ( $this->last_opened_tag == $tag )
{
$this->parent = $this->data;
$this->last_opened_tag = NULL;
}
array_pop( $this->stack );
if ( $this->stack )
{
$this->parent =& $this->stack[count( $this->stack ) - 1];
}
}

}

function &XML_unserialize( &$xml )
{
$xml_parser = new XML( );
$data =& $xml_parser->parse( $xml );
$xml_parser->destruct( );
return $data;
}

function &XML_serialize( &$data, $level = 0, $prior_key = NULL )
{
if ( $level == 0 )
{
ob_start( );
echo "";
echo "\n";
}
while ( list( $key, $value ) = each( $data ) )
{
if ( !strpos( $key, " attr" ) )
{
if ( is_array( $value ) && array_key_exists( 0, $value ) )
{
xml_serialize( $value, $level, $key );
}
else
{
$tag = $prior_key ? $prior_key : $key;
echo str_repeat( "\t", $level );
echo " echo $tag;
if ( array_key_exists( "{$key} attr", $data ) )
{
while ( list( $attr_name, $attr_value ) = each( $data["{$key} attr"] ) )
{
echo " ";
echo $attr_name;
echo "=\"";
echo htmlspecialchars( $attr_value );
echo "\"";
}
reset( $data["{$key} attr"] );
}
if ( is_null( $value ) )
{
echo " />\n";
}
else if ( !is_array( $value ) )
{
echo ">";
echo htmlspecialchars( $value );
echo "{$tag}>\n";
}
else
{
echo ">\n";
echo xml_serialize( $value, $level + 1 );
echo str_repeat( "\t", $level );
echo "{$tag}>\n";
}
}
}
}
reset( $data );
if ( $level == 0 )
{
$str =& ob_get_contents( );
ob_end_clean( );
return $str;
}
}

function count_numeric_items( &$array )
{
return is_array( $array ) ? count( array_filter( array_keys( $array ), "is_numeric" ) ) : 0;
}

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