class node

XML node management class:

<?php
class node implements ArrayAccess
{
    # Creates an object from DOMNode
    function __construct($node);

    # Returns node name
    function name();

    # Returns node path
    function path();

    # Returns node value or null
    function value();

    # Returns node value or throws an exception
    function checked_value();

    # Returns node attributes map
    function attributes();

    # Returns attribute value or $default value if requested attribute doesn't exist
    function attribute($name, $default = null);

    # Returns parent node
    function parent();

    # Returns children node set
    function children();

    # Returns true if document has no children nodes and false otherwise
    function blank();

    # Inserts $new node before $node child node
    function insert($new, $node);

    # Replaces $old child node with $new node
    function replace($new, $old);

    # Removes $child node from child nodes
    function remove($child);

    # Returns internal DOMNode resource handle
    function get();
}
?>

Usage example:

<?php
$xml = xml::load('/xml/library.xml');
$node = $xml->root();
foreach($node->attributes() as $name => $value)
{
    var_dump($name);
    var_dump($value);
}
foreach($node->children() as $child)
{
    # ...
}
foreach($node->query('book') as $book)
{
    var_dump($book['@author_id']);
    var_dump($book['price/@currency']);
    $book['price/@currency'] = 'usd';
}
?>

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