Forms php & mysql

Thats what i needed to know, but can anyone tell me why this one work ?

Code:
foreach($result as $key => $value) {
                $keys = unserialize($key);
                $values = unserialize($value);
                
                print_r($keys);
                print_r($values);
                $output[$keys] = $values;
            }

the print_r is purely for testing, but the actual print_r($values) is empty even though it shouldnt be
 
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