1 rizwank 1.1 <?php
  2             ###################################################################################
  3             #
  4             # XML Library, by Keith Devens, version 1.2b
  5             # http://keithdevens.com/software/phpxml
  6             #
  7             # This code is Open Source, released under terms similar to the Artistic License.
  8             # Read the license at http://keithdevens.com/software/license
  9             #
 10             ###################################################################################
 11             
 12             ###################################################################################
 13             # XML_unserialize: takes raw XML as a parameter (a string)
 14             # and returns an equivalent PHP data structure
 15             ###################################################################################
 16             function & XML_unserialize(&$xml){
 17             	$xml_parser = &new XML();
 18             	$data = &$xml_parser->parse($xml);
 19             	$xml_parser->destruct();
 20             	return $data;
 21             }
 22 rizwank 1.1 ###################################################################################
 23             # XML_serialize: serializes any PHP data structure into XML
 24             # Takes one parameter: the data to serialize. Must be an array.
 25             ###################################################################################
 26             function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
 27             	if($level == 0){ ob_start(); echo '<?xml version="1.0" ?>',"\n"; }
 28             	while(list($key, $value) = each($data))
 29             		if(!strpos($key, ' attr')) #if it's not an attribute
 30             			#we don't treat attributes by themselves, so for an empty element
 31             			# that has attributes you still need to set the element to NULL
 32             
 33             			if(is_array($value) and array_key_exists(0, $value)){
 34             				XML_serialize($value, $level, $key);
 35             			}else{
 36             				$tag = $prior_key ? $prior_key : $key;
 37             				echo str_repeat("\t", $level),'<',$tag;
 38             				if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
 39             					while(list($attr_name, $attr_value) = each($data["$key attr"]))
 40             						echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
 41             					reset($data["$key attr"]);
 42             				}
 43 rizwank 1.1 
 44             				if(is_null($value)) echo " />\n";
 45             				elseif(!is_array($value)) echo '>',htmlspecialchars($value),"</$tag>\n";
 46             				else echo ">\n",XML_serialize($value, $level+1),str_repeat("\t", $level),"</$tag>\n";
 47             			}
 48             	reset($data);
 49             	if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
 50             }
 51             ###################################################################################
 52             # XML class: utility class to be used with PHP's XML handling functions
 53             ###################################################################################
 54             class XML{
 55             	var $parser;   #a reference to the XML parser
 56             	var $document; #the entire XML structure built up so far
 57             	var $parent;   #a pointer to the current parent - the parent will be an array
 58             	var $stack;    #a stack of the most recent parent at each nesting level
 59             	var $last_opened_tag; #keeps track of the last tag opened.
 60             
 61             	function XML(){
 62              		$this->parser = &xml_parser_create();
 63             		xml_parser_set_option(&$this->parser, XML_OPTION_CASE_FOLDING, false);
 64 rizwank 1.1 		xml_set_object(&$this->parser, &$this);
 65             		xml_set_element_handler(&$this->parser, 'open','close');
 66             		xml_set_character_data_handler(&$this->parser, 'data');
 67             	}
 68             	function destruct(){ xml_parser_free(&$this->parser); }
 69             	function & parse(&$data){
 70             		$this->document = array();
 71             		$this->stack    = array();
 72             		$this->parent   = &$this->document;
 73             		return xml_parse(&$this->parser, &$data, true) ? $this->document : NULL;
 74             	}
 75             	function open(&$parser, $tag, $attributes){
 76             		$this->data = ''; #stores temporary cdata
 77             		$this->last_opened_tag = $tag;
 78             		if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
 79             			if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
 80             				#this is the third or later instance of $tag we've come across
 81             				$key = count_numeric_items($this->parent[$tag]);
 82             			}else{
 83             				#this is the second instance of $tag that we've seen. shift around
 84             				if(array_key_exists("$tag attr",$this->parent)){
 85 rizwank 1.1 					$arr = array('0 attr'=>&$this->parent["$tag attr"], &$this->parent[$tag]);
 86             					unset($this->parent["$tag attr"]);
 87             				}else{
 88             					$arr = array(&$this->parent[$tag]);
 89             				}
 90             				$this->parent[$tag] = &$arr;
 91             				$key = 1;
 92             			}
 93             			$this->parent = &$this->parent[$tag];
 94             		}else{
 95             			$key = $tag;
 96             		}
 97             		if($attributes) $this->parent["$key attr"] = $attributes;
 98             		$this->parent  = &$this->parent[$key];
 99             		$this->stack[] = &$this->parent;
100             	}
101             	function data(&$parser, $data){
102             		if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
103             			$this->data .= $data;
104             	}
105             	function close(&$parser, $tag){
106 rizwank 1.1 		if($this->last_opened_tag == $tag){
107             			$this->parent = $this->data;
108             			$this->last_opened_tag = NULL;
109             		}
110             		array_pop($this->stack);
111             		if($this->stack) $this->parent = &$this->stack[count($this->stack)-1];
112             	}
113             }
114             function count_numeric_items(&$array){
115             	return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
116             }
117             ?>