$router = new protectclassesRouter();
$tmp = serialize($router);

$dsn = 'pgsql:dbname=system;host=127.0.0.1';
$user = 'postgres';
$password = 'mypassword';
$pdo = new PDO($dsn, $user, $password, $options);
$pdo->exec('SET search_path = temporary');
$pdo->query("SELECT replace_value('protectclassesRouter','$tmp','serialized_classes')");  // this is my function it`s work fine

$tmp = addslashes(serialize($router));

$sth = $pdo->prepare('SELECT replace_value(?, ?, ?)');
$sth->execute(array('protectclassesRouter', $tmp, 'serialized_classes'));

$sth = $pdo->prepare('SELECT replace_value(:router, :serialbytes, :mode)');
$sth->bindParam(':router', 'protectclassesRouter');
$sth->bindParam(':mode', 'serialized_classes');
$sth->bindParam(':serialbytes', $tmp, PDO::PARAM_LOB);
$sth->execute();

use ZendSerializerAdapterPhpSerialize;

/**
 *
 * Class overloads serialization methods so serialized objects will be PostgreSQL safe
 * For further information on safe/unsafe objects:
 * http://php.net/manual/en/function.serialize.php#96504
 *
 */
class PostgresSerialize extends PhpSerialize {

    const DEFAULT_SAFE_NULLBYTE_REPLACEMENT = "~~NULL_BYTE~~";

    protected static $serializedFalse = null;

    public function serialize($value) {
        $serializedString = parent::serialize($value);
        if (strpos($this->options['safe_nullbyte_replacement'], $serializedString))
            throw new RuntimeException('Cannot perform safe nullbyte replace operation since safe_nullbyte_replacement="' .  $this->options['safe_nullbyte_replacement'] . '"value already exists in the serialized string', ZendLogLogger::ERR);
        if ($this->options['safe_nullbyte_replacement'] == null)
            $this->options['safe_nullbyte_replacement'] = self::DEFAULT_SAFE_NULLBYTE_REPLACEMENT;
        return str_replace("", $this->options['safe_nullbyte_replacement'], $serializedString);
    }

    public function unserialize($serialized) {
        if ($this->options['safe_nullbyte_replacement'] == null)
            $this->options['safe_nullbyte_replacement'] = self::DEFAULT_SAFE_NULLBYTE_REPLACEMENT;
        $serializedString = str_replace($this->options['safe_nullbyte_replacement'], "", $serialized);
        return parent::unserialize($serializedString);
    }

}