PHP-References (Pointers) used in the TouchNet

references.php

<?php

/**
 * These classes maintain references (pointers) in PHP. The first class
 * can store one reference only, while the ReferenceContainer can store many
 * references at once.
 *
 * This class is used in the TouchNet to send all modules to all modules.
 *
 * @author Daniel Bugl
 */

class TN_Reference {
    public $v = null;
    function __construct($variable) {
        $this->v = $variable;
    }
}

/**
 * ALWAYS use the ReferenceContainer if you do not know how to use References
 * correctly! 
 */
class TN_ReferenceContainer {
    private $references = array();
    
    public function addPointer($name, $data) {
        if (is_object($data))
            $obj = $data;
        else
            $obj = new TN_Reference($data);
        if (get_class($obj) == "TN_Reference")
            $ref = $obj;
        else
            $ref = new TN_Reference($obj);
        $this->references[$name] =& $ref;
    }
    
    public function getPointers() {
        $ret = array();
        reset($this->references); // Set the index to 0
        while ($pointer = current($this->references)) { // Loop through the keys
            $ret[] = key($this->references);
            next($this->references);
        }
        return $ret;
    }
    
    private function getPointerID($name) {
        /*for ($i=0; $i<=count($this->references); $i++) {
            if($this->references[$i]["name"] == $name) return $i;
        }*/
        return $name; // The structure of references changed a bit.
        // TODO: Remove this useless function.
    }
    
    public function getPointer($name) {
        $id = $this->getPointerID($name);
        return $this->references[$id];
    }
    
    public function delPointer($name) {
        $id = $this->getPointerID($name);
        unset($this->references[$id]);
    }
}

?>