(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.
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