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The Note You're Voting On

13 years ago
<?php

/*
 * An implementation of the Iterator
 * with simpleXML to remove a node and generate a new XML file.
 * 
 * project.xml file:
 * <?xml version="1.0" encoding="UTF-8"?>
 * ...
 * <data>
 *  <item>
 *      <value>one</value>
 *  </item>
 *  <item>
 *      <value>two</value>
 *  </item>
 *  ...
 * </data>
 * 
 */

class parseXML implements Iterator {
    
    private $position;
    private $xml;
    public $item;

    public function __construct() {
        
        $this->position = 0;
        $this->xml = simplexml_load_file('project.xml');
                
    }
    
    public function unsetItem() {
        
        foreach ($this as $key => $value) {
        
            if ($value->value == $this->item ) {
        
                unset($this->xml->data->item[$key]);
        
            }
        }
        
        $this->mkXML();
    }
    
    public function mkXML() {
        
        file_put_contents('project.xml', $this->xml->asXML() );
        
    }

    function rewind() {
        $this->position = 0;
    }

    function current() {
        return $this->xml->data->item[$this->position];
    }

    function key() {
        return $this->position;
    }

    function next() {
        ++$this->position;
    }

    function valid() {
        return isset($this->xml->data->item[$this->position]);
    }
    
}

$itemRemove = new parseXML();

$itemRemove->item = "one";

$itemRemove->unsetItem();

?>
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