XML与数据格式进行转换类-PHP源码

[PHP]代码

 $val) {
                if ($priority == &＃39;tag&＃39;) $attributes_data[$attr] = $val;
                else $result[&＃39;attr&＃39;][$attr] = $val; //Set all the attributes in a array called &＃39;attr&＃39; 
            } 
        } 
        // See tag status and do the needed.
        if ($type == "open") { // The starting of the tag &＃39;&＃39;
            $parent[$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 . &＃39;_attr&＃39;] = $attributes_data;
                $repeated_tag_index[$tag . &＃39;_&＃39; . $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 . &＃39;_&＃39; . $level]] = $result;
                    $repeated_tag_index[$tag . &＃39;_&＃39; . $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 . &＃39;_&＃39; . $level] = 2;

                    if (isset($current[$tag . &＃39;_attr&＃39;])) { // The attribute of the last(0th) tag must be moved as well
                        $current[$tag][&＃39;0_attr&＃39;] = $current[$tag . &＃39;_attr&＃39;];
                        unset($current[$tag . &＃39;_attr&＃39;]);
                    } 
                } 
                $last_item_index = $repeated_tag_index[$tag . &＃39;_&＃39; . $level]-1;
                $current = &$current[$tag][$last_item_index];
            } 
        } elseif ($type == "complete") { // Tags that ends in 1 line &＃39;&＃39;
            // See if the key is already taken.
            if (!isset($current[$tag])) { // New Key
                $current[$tag] = $result;
                $repeated_tag_index[$tag . &＃39;_&＃39; . $level] = 1;
                if ($priority == &＃39;tag&＃39; and $attributes_data) $current[$tag . &＃39;_attr&＃39;] = $attributes_data;
            } else { // If taken, put all things inside a list(array)
                if (isset($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 . &＃39;_&＃39; . $level]] = $result;

                    if ($priority == &＃39;tag&＃39; and $get_attributes and $attributes_data) {
                        $current[$tag][$repeated_tag_index[$tag . &＃39;_&＃39; . $level] . &＃39;_attr&＃39;] = $attributes_data;
                    } 
                    $repeated_tag_index[$tag . &＃39;_&＃39; . $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 . &＃39;_&＃39; . $level] = 1;
                    if ($priority == &＃39;tag&＃39; and $get_attributes) {
                        if (isset($current[$tag . &＃39;_attr&＃39;])) { // The attribute of the last(0th) tag must be moved as well
                            $current[$tag][&＃39;0_attr&＃39;] = $current[$tag . &＃39;_attr&＃39;];
                            unset($current[$tag . &＃39;_attr&＃39;]);
                        } 

                        if ($attributes_data) {
                            $current[$tag][$repeated_tag_index[$tag . &＃39;_&＃39; . $level] . &＃39;_attr&＃39;] = $attributes_data;
                        } 
                    } 
                    $repeated_tag_index[$tag . &＃39;_&＃39; . $level]++; //0 and 1 index is already taken 
                } 
            } 
        } elseif ($type == &＃39;close&＃39;) { // End of tag &＃39;&＃39;
            $current = &$parent[$level-1];
        } 
    } 

    return($xml_array);
} 

// Array to XML
class array2xml {
    public $output = "\n";
    public $sub_item = array();
    public function __construct($array) {
        $sub_item = array();
        $this->output .= $this->xmlmake($array);
    } 
    public function xmlmake($array, $fk = &＃39;&＃39;) {
        $xml = &＃39;&＃39;;
        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) . "";
                } else {
                    $xml .= "<{$key}>" . $this->xmlmake($value, $key) . "";
                } 
            } else {
                $xml .= "<{$key}>{$value}\n";
            } 
        } 
        return $xml;
    } 
    public function output(){
        foreach($this->sub_item as $t){
            $this->output = str_replace("<{$t}><{$t}>","<{$t}>",$this->output);
            $this->output = str_replace("","",$this->output);
        }
        return $this->output;
    }
}