The Spoofchecker class

Introduction

(PHP 5 >= 5.4.0, PHP 7, PECL intl >= 2.0.0)

This class is provided because Unicode contains large number of characters and incorporates the varied writing systems of the world and their incorrect usage can expose programs or systems to possible security attacks using characters similarity.

Provided methods allow to check whether an individual string is likely an attempt at confusing the reader (spoof detection), such as "pаypаl" spelled with Cyrillic 'а' characters.

Class synopsis

Spoofchecker {

/* Constants */

const int|float ASCII = 0x10000000 ;

const int|float HIGHLY_RESTRICTIVE = 0x30000000 ;

const int|float MODERATELY_RESTRICTIVE = 0x40000000 ;

const int|float MINIMALLY_RESTRICTIVE = 0x50000000 ;

const int|float UNRESTRICTIVE = 0x60000000 ;

const int|float SINGLE_SCRIPT_RESTRICTIVE = 0x20000000 ;

const int SINGLE_SCRIPT_CONFUSABLE = 1 ;

const int MIXED_SCRIPT_CONFUSABLE = 2 ;

const int WHOLE_SCRIPT_CONFUSABLE = 4 ;

const int ANY_CASE = 8 ;

const int SINGLE_SCRIPT = 16 ;

const int INVISIBLE = 32 ;

const int CHAR_LIMIT = 64 ;

/* Methods */

public areConfusable ( string $str1 , string $str2 [, string &$error ] ) : bool

public __construct ( )

public isSuspicious ( string $text [, string &$error ] ) : bool

public setAllowedLocales ( string $locale_list ) : void

public setChecks ( int $checks ) : void

}

Predefined Constants

Spoofchecker::ASCII
Spoofchecker::HIGHLY_RESTRICTIVE
Spoofchecker::MODERATELY_RESTRICTIVE
Spoofchecker::MINIMALLY_RESTRICTIVE
Spoofchecker::UNRESTRICTIVE
Spoofchecker::SINGLE_SCRIPT_RESTRICTIVE
Spoofchecker::SINGLE_SCRIPT_CONFUSABLE
Spoofchecker::MIXED_SCRIPT_CONFUSABLE
Spoofchecker::WHOLE_SCRIPT_CONFUSABLE
Spoofchecker::ANY_CASE
Spoofchecker::SINGLE_SCRIPT
Spoofchecker::INVISIBLE
Spoofchecker::CHAR_LIMIT

Changelog

Version	Description
7.3.0	Class constants used by Spoofchecker::setRestrictionLevel() such as `Spoofchecker::ASCII`, `Spoofchecker::HIGHLY_RESTRICTIVE`, `Spoofchecker::MODERATELY_RESTRICTIVE`, `Spoofchecker::MINIMALLY_RESTRICTIVE`, `Spoofchecker::UNRESTRICTIVE`, `Spoofchecker::SINGLE_SCRIPT_RESTRICTIVE` has been added.

Spoofchecker::areConfusable — Checks if given strings can be confused
Spoofchecker::__construct — Constructor
Spoofchecker::isSuspicious — Checks if a given text contains any suspicious characters
Spoofchecker::setAllowedLocales — Locales to use when running checks
Spoofchecker::setChecks — Set the checks to run

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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/class.spoofchecker.php

The Spoofchecker class

Introduction

Class synopsis

Predefined Constants

Changelog

Table of Contents