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- a lib for php4 that is good substitute for simplexml

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1 parent 1879ef2 commit d71ea8ce19a91abb010c8965754a3dc7950ed662 luizlaydner committed Aug 13, 2007
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  1. +117 −0 lib/phpxml/xml.php
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117 lib/phpxml/xml.php
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+<?php
+###################################################################################
+#
+# XML Library, by Keith Devens, version 1.2b
+# http://keithdevens.com/software/phpxml
+#
+# This code is Open Source, released under terms similar to the Artistic License.
+# Read the license at http://keithdevens.com/software/license
+#
+###################################################################################
+
+###################################################################################
+# XML_unserialize: takes raw XML as a parameter (a string)
+# and returns an equivalent PHP data structure
+###################################################################################
+function & XML_unserialize(&$xml){
+ $xml_parser = &new XML();
+ $data = &$xml_parser->parse($xml);
+ $xml_parser->destruct();
+ return $data;
+}
+###################################################################################
+# XML_serialize: serializes any PHP data structure into XML
+# Takes one parameter: the data to serialize. Must be an array.
+###################################################################################
+function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
+ if($level == 0){ ob_start(); echo '<?xml version="1.0" ?>',"\n"; }
+ while(list($key, $value) = each($data))
+ if(!strpos($key, ' attr')) #if it's not an attribute
+ #we don't treat attributes by themselves, so for an empty element
+ # that has attributes you still need to set the element to NULL
+
+ if(is_array($value) and array_key_exists(0, $value)){
+ XML_serialize($value, $level, $key);
+ }else{
+ $tag = $prior_key ? $prior_key : $key;
+ echo str_repeat("\t", $level),'<',$tag;
+ if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
+ while(list($attr_name, $attr_value) = each($data["$key attr"]))
+ echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
+ reset($data["$key attr"]);
+ }
+
+ if(is_null($value)) echo " />\n";
+ elseif(!is_array($value)) echo '>',htmlspecialchars($value),"</$tag>\n";
+ else echo ">\n",XML_serialize($value, $level+1),str_repeat("\t", $level),"</$tag>\n";
+ }
+ reset($data);
+ if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
+}
+###################################################################################
+# XML class: utility class to be used with PHP's XML handling functions
+###################################################################################
+class XML{
+ var $parser; #a reference to the XML parser
+ var $document; #the entire XML structure built up so far
+ var $parent; #a pointer to the current parent - the parent will be an array
+ var $stack; #a stack of the most recent parent at each nesting level
+ var $last_opened_tag; #keeps track of the last tag opened.
+
+ 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');
+ }
+ function destruct(){ xml_parser_free(&$this->parser); }
+ function & parse(&$data){
+ $this->document = array();
+ $this->stack = array();
+ $this->parent = &$this->document;
+ return xml_parse(&$this->parser, &$data, true) ? $this->document : NULL;
+ }
+ function open(&$parser, $tag, $attributes){
+ $this->data = ''; #stores temporary cdata
+ $this->last_opened_tag = $tag;
+ if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
+ if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
+ #this is the third or later instance of $tag we've come across
+ $key = count_numeric_items($this->parent[$tag]);
+ }else{
+ #this is the second instance of $tag that we've seen. shift around
+ if(array_key_exists("$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;
+ }
+ function data(&$parser, $data){
+ if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
+ $this->data .= $data;
+ }
+ function close(&$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($this->stack)-1];
+ }
+}
+function count_numeric_items(&$array){
+ return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
+}
+?>

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