(PHP 5 >= 5.4.0, PHP 7, PHP 8, PECL intl >= 2.0.0)
$string1
$string2
&$errorCode
null
$string
$locales
$checks
$level
Spoofchecker::SINGLE_SCRIPT_CONFUSABLE
Spoofchecker::MIXED_SCRIPT_CONFUSABLE
Spoofchecker::WHOLE_SCRIPT_CONFUSABLE
Spoofchecker::ANY_CASE
Spoofchecker::SINGLE_SCRIPT
Spoofchecker::INVISIBLE
Spoofchecker::CHAR_LIMIT