(PHP 7 >= 7.3.0, PHP 8)
Spoofchecker::setRestrictionLevel — Set the restriction level
Sets the restriction level of SpoofChecker::isSuspicious().
level
      The restriction level of SpoofChecker::isSuspicious().
      One of
      Spoofchecker::ASCII,
      Spoofchecker::SINGLE_SCRIPT_RESTRICTIVE,
      Spoofchecker::HIGHLY_RESTRICTIVE,
      Spoofchecker::MODERATELY_RESTRICTIVE,
      Spoofchecker::MINIMALLY_RESTRICTIVE, or
      Spoofchecker::UNRESTRICTIVE.
      Defaults to Spoofchecker::HIGHLY_RESTRICTIVE.
     
没有返回值。
