<?php 
 
/** 
 * undocumented class 
 * 
 * @package default 
 * @author  
 **/ 
class Test 
{ 
    public $var, $var2 = ''; 
    function __construct($var,$var2='') { 
        $this->var = $var; 
        $this->var2 = $var2; 
    } 
 
    public function out() 
    { 
        $var2 = ''; 
        if($this->var2 !='') 
        { 
            $var2= ' and '.$this->var2->out();     
        } 
 
        return "I'm " . $this->var . $var2; 
    } 
 
    public function sum($a,$b,$c) 
    { 
        $this->sum = $a + $b + $c; 
    } 
 
    public function getSum() 
    { 
        return $this->sum; 
    } 
 
    function __toString() 
    { 
        return $this->var; 
    } 
}
 
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