src/Helper.php
public static function searchFilterGetValueAtKey($oFilterObj, $iKey)
    {
        return isset($oFilterObj->options[$iKey]->value) ? $oFilterObj->options[$iKey]->value : null;
    }
public static function searchFilterGetValueAtKey($oFilterObj, $iKey)
    {
        return isset($oFilterObj->options[$iKey]->value) ? $oFilterObj->options[$iKey]->value : null;
    }
Returns a value from a filter object at a specific key

@param  \stdClass $oFilterObj The filter object to search
@param  integer   $iKey       The key to inspect

@return mixed                  Mixed on success, null on failure