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本文实例讲述了PHP实现XML与数据格式进行转换类。分享给大家供大家参考。具体如下:
<"'xml_parser_create()' function not found!";
return array();
}
// Get the XML parser of PHP - PHP must have this module for the parser to work
$parser = xml_parser_create('');
xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8"); // http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
xml_parse_into_struct($parser, trim($contents), $xml_values);
xml_parser_free($parser);
if (!$xml_values) return; //Hmm...
// Initializations
$xml_array = array();
$parents = array();
$opened_tags = array();
$arr = array();
$current = &$xml_array; //Refference
// Go through the tags.
$repeated_tag_index = array(); //Multiple tags with same name will be turned into an array
foreach($xml_values as $data) {
unset($attributes, $value); //Remove existing values, or there will be trouble
// This command will extract these variables into the foreach scope
// tag(string), type(string), level(int), attributes(array).
extract($data); //We could use the array by itself, but this cooler.
$result = array();
$attributes_data = array();
if (isset($value)) {
if ($priority == 'tag') $result = $value;
else $result['value'] = $value; //Put the value in a assoc array if we are in the 'Attribute' mode
}
// Set the attributes too.
if (isset($attributes) and $get_attributes) {
foreach($attributes as $attr => $val) {
if ($priority == 'tag') $attributes_data[$attr] = $val;
else $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
}
}
// See tag status and do the needed.
if ($type == "open") { // The starting of the tag '<tag>'
$parent[$level-1] = &$current;
if (!is_array($current) or (!in_array($tag, array_keys($current)))) { // Insert New tag
$current[$tag] = $result;
if ($attributes_data) $current[$tag . '_attr'] = $attributes_data;
$repeated_tag_index[$tag . '_' . $level] = 1;
$current = &$current[$tag];
} else { // There was another element with the same tag name
if (isset($current[$tag][0])) { // If there is a 0th element it is already an array
$current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
$repeated_tag_index[$tag . '_' . $level]++;
} else { // This section will make the value an array if multiple tags with the same name appear together
$current[$tag] = array($current[$tag], $result); //This will combine the existing item and the new item together to make an array
$repeated_tag_index[$tag . '_' . $level] = 2;
if (isset($current[$tag . '_attr'])) { // The attribute of the last(0th) tag must be moved as well
$current[$tag]['0_attr'] = $current[$tag . '_attr'];
unset($current[$tag . '_attr']);
}
}
$last_item_index = $repeated_tag_index[$tag . '_' . $level]-1;
$current = &$current[$tag][$last_item_index];
}
} elseif ($type == "complete") { // Tags that ends in 1 line '<tag />'
// See if the key is already taken.
if (!isset($current[$tag])) { // New Key
$current[$tag] = $result;
$repeated_tag_index[$tag . '_' . $level] = 1;
if ($priority == 'tag' and $attributes_data) $current[$tag . '_attr'] = $attributes_data;
} else { // If taken, put all things inside a list(array)
if (isset($current[$tag][0]) and is_array($current[$tag])) { // If it is already an array...
// ...push the new element into that array.
$current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
if ($priority == 'tag' and $get_attributes and $attributes_data) {
$current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
}
$repeated_tag_index[$tag . '_' . $level]++;
} else { // If it is not an array...
$current[$tag] = array($current[$tag], $result); //...Make it an array using using the existing value and the new value
$repeated_tag_index[$tag . '_' . $level] = 1;
if ($priority == 'tag' and $get_attributes) {
if (isset($current[$tag . '_attr'])) { // The attribute of the last(0th) tag must be moved as well
$current[$tag]['0_attr'] = $current[$tag . '_attr'];
unset($current[$tag . '_attr']);
}
if ($attributes_data) {
$current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
}
}
$repeated_tag_index[$tag . '_' . $level]++; //0 and 1 index is already taken
}
}
} elseif ($type == 'close') { // End of tag '</tag>'
$current = &$parent[$level-1];
}
}
return($xml_array);
}
// Array to XML
class array2xml {
public $output = "<"1.0\" encoding=\"utf-8\"";
public $sub_item = array();
public function __construct($array) {
$sub_item = array();
$this->output .= $this->xmlmake($array);
}
public function xmlmake($array, $fk = '') {
$xml = '';
global $sub_item;
foreach ($array as $key => $value) {
if (is_array($value)) {
if (is_numeric($key)) {
$this->sub_item=array_merge($this->sub_item,array($fk));
$xml .= "<{$fk}>" . $this->xmlmake($value, $key) . "</{$fk}>";
} else {
$xml .= "<{$key}>" . $this->xmlmake($value, $key) . "</{$key}>";
}
} else {
$xml .= "<{$key}>{$value}</{$key}>\n";
}
}
return $xml;
}
public function output(){
foreach($this->sub_item as $t){
$this->output = str_replace("<{$t}><{$t}>","<{$t}>",$this->output);
$this->output = str_replace("</{$t}></{$t}>","</{$t}>",$this->output);
}
return $this->output;
}
}
希望本文所述对大家的php程序设计有所帮助。
标签:
PHP,XML,数据格式,转换
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