这篇文章主要介绍了PHP实现XML与数据格式进行转换类,实例分析了php进行XML格式数据的方法,具有一定参考借鉴价值,需要的朋友可以参考下
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:
- <?php
- /**
- * xml2array() will convert the given XML text to an array in the XML structure.
- * Link: http://www.bin-co.com/php/scripts/xml2array/
- * Arguments : $contents - The XML text
- * $get_attributes - 1 or 0. If this is 1 the function will get the attributes as well as the tag values - this results in a different array structure in the return value.
- * $priority - Can be 'tag' or 'attribute'. This will change the way the resulting array sturcture. For 'tag', the tags are given more importance.
- * Return: The parsed XML in an array form. Use print_r() to see the resulting array structure.
- * Examples: $array = xml2array(file_get_contents('feed.xml'));
- * $array = xml2array(file_get_contents('feed.xml', 1, 'attribute'));
- */
- function xml2array($contents, $get_attributes = 1, $priority = 'tag') {
- if (!$contents) return array();
- if (!function_exists('xml_parser_create')) {
- // print "'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 = "<?xml version=/"1.0/" encoding=/"utf-8/"?>/n";
- 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。
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