opensim-www – Rev 1

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<?php
class UUID {
  /**
   * Generates version 1: MAC address
   */
  public static function v1() {
    if (!function_exists('uuid_create'))
      return false;

    uuid_create($context);
    uuid_make($context, UUID_MAKE_V1);
    uuid_export($context, UUID_FMT_STR, $uuid);
    return trim($uuid);
  }

  /**
   * Generates version 3 UUID: MD5 hash of URL
   */
  public static function v3($i_url) {
    if (!function_exists('uuid_create'))
      return false;

    if (!strlen($i_url))
      $i_url = self::v1();

    uuid_create($context);
    uuid_create($namespace);

    uuid_make($context, UUID_MAKE_V3, $namespace, $i_url);
    uuid_export($context, UUID_FMT_STR, $uuid);
    return trim($uuid);
  }

  /**
   * Generates version 4 UUID: random
   */
  public static function v4() {
    if (!function_exists('uuid_create'))
      return false;

    uuid_create($context);

    uuid_make($context, UUID_MAKE_V4);
    uuid_export($context, UUID_FMT_STR, $uuid);
    return trim($uuid);
  }

  /**
   * Generates version 5 UUID: SHA-1 hash of URL
   */
  public static function v5($i_url) {
    if (!function_exists('uuid_create'))
      return false;

    if (!strlen($i_url))
      $i_url = self::v1();

    uuid_create($context);
    uuid_create($namespace);

    uuid_make($context, UUID_MAKE_V5, $namespace, $i_url);
    uuid_export($context, UUID_FMT_STR, $uuid);
    return trim($uuid);
  }
}
?>

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