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/home/develito/www/plugins/system/t3/includes/extendable/extendable.php

<?php
 /** 
  *------------------------------------------------------------------------
  * T3 Framework for Joomla!
  * ------------------------------------------------------------------------
  * Copyright (C) 2004-2013 JoomlArt.com, Ltd. All Rights Reserved.
  * License - GNU/GPL, http://www.gnu.org/licenses/gpl.html
  * Authors:  JoomlArt, JoomlaBamboo 
  * If you want to be come co-authors of this project, please follow our guidelines at http://t3-framework.org/contribute
  * ------------------------------------------------------------------------
  */

// No direct access
defined('_JEXEC') or die();

define('_PHP_', intval(phpversion()));

if (! function_exists('property_exists')) {
    /**
     * Check property of object exists or not
     *
     * @param object $oObject    Checked object
     * @param string $sProperty  Property name
     *
     * @return bool  TRUE if exists, otherwise FALSE
     */
    function property_exists($oObject, $sProperty)
    {
        if (is_object($oObject)) {
            $oObject = get_class($oObject);
        }

return array_key_exists($sProperty, get_class_vars($oObject));
    }
}

/**
 * Check method of object is callable or not
 *
 * @param object $oObject  Checked object
 * @param string $sMethod  Method name
 *
 * @return bool  TRUE if exists, otherwise FALSE
 */
function method_callable($oObject, $sMethod)
{
    // must be object or string
    if (! is_object($oObject) && ! is_string($oObject)) {
        return false;
    }

return array_key_exists($sMethod, array_flip(get_class_methods($oObject)));
}

/**
 * Make object extendable
 *
 * @param string $classname  Class name
 *
 * @return void
 */
function make_object_extendable($classname)
{
    if (_PHP_ < 5) {
        overload($classname);
    }
}

if (_PHP_ >= 5) {
    include_once dirname(__FILE__) . '/object.5.php';
} else {
    include_once dirname(__FILE__) . '/object.4.php';
}