azure-storage-common/src/Common/Internal/ServiceRestProxy.php
public static function groupQueryValues(array $values)
    {
        Validate::isArray($values, 'values');
        $joined = Resources::EMPTY_STRING;

        sort($values);

        foreach ($values as $value) {
            if (!is_null($value) && !empty($value)) {
                $joined .= $value . Resources::SEPARATOR;
            }
        }

        return trim($joined, Resources::SEPARATOR);
    }
public static function groupQueryValues(array $values)
    {
        Validate::isArray($values, 'values');
        $joined = Resources::EMPTY_STRING;

        sort($values);

        foreach ($values as $value) {
            if (!is_null($value) && !empty($value)) {
                $joined .= $value . Resources::SEPARATOR;
            }
        }

        return trim($joined, Resources::SEPARATOR);
    }
Groups set of values into one value separated with Resources::SEPARATOR

@param array $values array of values to be grouped.

@return string