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README.md

🔡 Portable ASCII

Description

It is written in PHP (PHP 7+) and can work without "mbstring", "iconv" or any other extra encoding php-extension on your server.

The benefit of Portable ASCII is that it is easy to use, easy to bundle.

The project based on ...

Sean M. Burke's work (https://metacpan.org/pod/Text::Unidecode)
Tomaz Solc's work (https://pypi.org/project/Unidecode/)
Portable UTF-8 work (https://github.com/voku/portable-utf8)
Daniel St. Jules's work (https://github.com/danielstjules/Stringy)
Johnny Broadway's work (https://github.com/jbroadway/urlify)
and many cherry-picks from "github"-gists and "Stack Overflow"-snippets ...

Alternative

If you like a more Object Oriented Way to edit strings, then you can take a look at voku/Stringy, it's a fork of "danielstjules/Stringy" but it used the "Portable ASCII"-Class and some extra methods.

// Portable ASCII
use voku\helper\ASCII;
ASCII::to_transliterate('déjà σσς iıii'); // 'deja sss iiii'

// voku/Stringy
use Stringy\Stringy as S;
$stringy = S::create('déjà σσς iıii');
$stringy->toTransliterate();              // 'deja sss iiii'

Install "Portable ASCII" via "composer require"

composer require voku/portable-ascii

Why Portable ASCII?

I need ASCII char handling in different classes and before I added this functions into "Portable UTF-8", but this repo is more modular and portable, because it has no dependencies.

Requirements and Recommendations

No extensions are required to run this library. Portable ASCII only needs PCRE library that is available by default since PHP 4.2.0 and cannot be disabled since PHP 5.3.0. "\u" modifier support in PCRE for ASCII handling is not a must.
PHP 7.0 is the minimum requirement
PHP 8.0 is also supported

Usage

Example: ASCII::to_ascii()

  echo ASCII::to_ascii('<27>Düsseldorf<72>', 'de');
  
  // will output
  // Duesseldorf

  echo ASCII::to_ascii('<27>Düsseldorf<72>', 'en');
  
  // will output
  // Dusseldorf

Portable ASCII | API

The API from the "ASCII"-Class is written as small static methods.

Class methods

charsArray	charsArrayWithMultiLanguageValues	charsArrayWithOneLanguage	charsArrayWithSingleLanguageValues
clean	getAllLanguages	is_ascii	normalize_msword
normalize_whitespace	remove_invisible_characters	to_ascii	to_ascii_remap
to_filename	to_slugify	to_transliterate

charsArray(bool $replace_extra_symbols): array

↑ Returns an replacement array for ASCII methods.

EXAMPLE: $array = ASCII::charsArray(); var_dump($array['ru']['б']); // 'b'

Parameters:

bool $replace_extra_symbols [optional] Add some more replacements e.g. "£" with " pound ".

Return:

array

charsArrayWithMultiLanguageValues(bool $replace_extra_symbols): array

↑ Returns an replacement array for ASCII methods with a mix of multiple languages.

EXAMPLE: $array = ASCII::charsArrayWithMultiLanguageValues(); var_dump($array['b']); // ['β', 'б', 'ဗ', 'ბ', 'ب']

Parameters:

bool $replace_extra_symbols [optional] Add some more replacements e.g. "£" with " pound ".

Return:

array An array of replacements.

charsArrayWithOneLanguage(string $language, bool $replace_extra_symbols, bool $asOrigReplaceArray): array

↑ Returns an replacement array for ASCII methods with one language.

For example, German will map 'ä' to 'ae', while other languages will simply return e.g. 'a'.

EXAMPLE: $array = ASCII::charsArrayWithOneLanguage('ru'); $tmpKey = \array_search('yo', $array['replace']); echo $array['orig'][$tmpKey]; // 'ё'

Parameters:

ASCII::* $language [optional] Language of the source string e.g.: en, de_at, or de-ch. (default is 'en') | ASCII::*_LANGUAGE_CODE
bool $replace_extra_symbols [optional] Add some more replacements e.g. "£" with " pound ".
bool $asOrigReplaceArray [optional] TRUE === return {orig: string[], replace: string[]} array

Return:

array An array of replacements.

charsArrayWithSingleLanguageValues(bool $replace_extra_symbols, bool $asOrigReplaceArray): array

↑ Returns an replacement array for ASCII methods with multiple languages.

EXAMPLE: $array = ASCII::charsArrayWithSingleLanguageValues(); $tmpKey = \array_search('hnaik', $array['replace']); echo $array['orig'][$tmpKey]; // '၌'

Parameters:

bool $replace_extra_symbols [optional] Add some more replacements e.g. "£" with " pound ".
bool $asOrigReplaceArray [optional] TRUE === return {orig: string[], replace: string[]} array

Return:

array An array of replacements.

clean(string $str, bool $normalize_whitespace, bool $keep_non_breaking_space, bool $normalize_msword, bool $remove_invisible_characters): string

↑ Accepts a string and removes all non-UTF-8 characters from it + extras if needed.

Parameters:

string $str The string to be sanitized.
bool $normalize_whitespace [optional] Set to true, if you need to normalize the whitespace.
bool $keep_non_breaking_space [optional] Set to true, to keep non-breaking-spaces, in combination with $normalize_whitespace
bool $normalize_msword [optional] Set to true, if you need to normalize MS Word chars e.g.: "…" => "..."
bool $remove_invisible_characters [optional] Set to false, if you not want to remove invisible characters e.g.: "\0"

Return:

string A clean UTF-8 string.

getAllLanguages(): string[]

↑ Get all languages from the constants "ASCII::.*LANGUAGE_CODE".

Parameters: nothing

Return:

string[]

is_ascii(string $str): bool

↑ Checks if a string is 7 bit ASCII.

EXAMPLE: ASCII::is_ascii('白'); // false

Parameters:

string $str The string to check.

Return:

`bool
true if it is ASCII
false otherwise

normalize_msword(string $str): string

↑ Returns a string with smart quotes, ellipsis characters, and dashes from Windows-1252 (commonly used in Word documents) replaced by their ASCII equivalents.

EXAMPLE: ASCII::normalize_msword('„Abcdef…”'); // '"Abcdef..."'

Parameters:

string $str The string to be normalized.

Return:

string A string with normalized characters for commonly used chars in Word documents.

normalize_whitespace(string $str, bool $keepNonBreakingSpace, bool $keepBidiUnicodeControls, bool $normalize_control_characters): string

↑ Normalize the whitespace.

EXAMPLE: ASCII::normalize_whitespace("abc-\xc2\xa0-öäü-\xe2\x80\xaf-\xE2\x80\xAC", true); // "abc-\xc2\xa0-öäü- -"

Parameters:

string $str The string to be normalized.
bool $keepNonBreakingSpace [optional] Set to true, to keep non-breaking-spaces.
bool $keepBidiUnicodeControls [optional] Set to true, to keep non-printable (for the web) bidirectional text chars.
bool $normalize_control_characters [optional] Set to true, to convert e.g. LINE-, PARAGRAPH-SEPARATOR with "\n" and LINE TABULATION with "\t".

Return:

string A string with normalized whitespace.

remove_invisible_characters(string $str, bool $url_encoded, string $replacement, bool $keep_basic_control_characters): string

↑ Remove invisible characters from a string.

e.g.: This prevents sandwiching null characters between ascii characters, like Java\0script.

copy&past from https://github.com/bcit-ci/CodeIgniter/blob/develop/system/core/Common.php

Parameters:

string $str
bool $url_encoded
string $replacement
bool $keep_basic_control_characters

Return:

string

to_ascii(string $str, string $language, bool $remove_unsupported_chars, bool $replace_extra_symbols, bool $use_transliterate, bool|null $replace_single_chars_only): string

↑ Returns an ASCII version of the string. A set of non-ASCII characters are replaced with their closest ASCII counterparts, and the rest are removed by default. The language or locale of the source string can be supplied for language-specific transliteration in any of the following formats: en, en_GB, or en-GB. For example, passing "de" results in "äöü" mapping to "aeoeue" rather than "aou" as in other languages.

EXAMPLE: ASCII::to_ascii('<27>Düsseldorf<72>', 'en'); // Dusseldorf

Parameters:

string $str The input string.
ASCII::* $language [optional] Language of the source string. (default is 'en') | ASCII::*_LANGUAGE_CODE
bool $remove_unsupported_chars [optional] Whether or not to remove the unsupported characters.
bool $replace_extra_symbols [optional] Add some more replacements e.g. "£" with " pound ".
bool $use_transliterate [optional] Use ASCII::to_transliterate() for unknown chars.
bool|null $replace_single_chars_only [optional] Single char replacement is better for the performance, but some languages need to replace more then one char at the same time. | NULL === auto-setting, depended on the language

Return:

string A string that contains only ASCII characters.

to_ascii_remap(string $str1, string $str2): string[]

↑ WARNING: This method will return broken characters and is only for special cases.

Convert two UTF-8 encoded string to a single-byte strings suitable for functions that need the same string length after the conversion.

The function simply uses (and updates) a tailored dynamic encoding (in/out map parameter) where non-ascii characters are remapped to the range [128-255] in order of appearance.

Parameters:

string $str1
string $str2

Return:

string[]

to_filename(string $str, bool $use_transliterate, string $fallback_char): string

↑ Convert given string to safe filename (and keep string case).

EXAMPLE: ASCII::to_filename('שדגשדג.png', true)); // 'shdgshdg.png'

Parameters:

string $str
bool $use_transliterate ASCII::to_transliterate() is used by default - unsafe characters are simply replaced with hyphen otherwise.
string $fallback_char

Return:

string A string that contains only safe characters for a filename.

to_slugify(string $str, string $separator, string $language, string[] $replacements, bool $replace_extra_symbols, bool $use_str_to_lower, bool $use_transliterate): string

↑ Converts the string into an URL slug. This includes replacing non-ASCII characters with their closest ASCII equivalents, removing remaining non-ASCII and non-alphanumeric characters, and replacing whitespace with $separator. The separator defaults to a single dash, and the string is also converted to lowercase. The language of the source string can also be supplied for language-specific transliteration.

Parameters:

string $str
string $separator [optional] The string used to replace whitespace.
ASCII::* $language [optional] Language of the source string. (default is 'en') | ASCII::*_LANGUAGE_CODE
array<string, string> $replacements [optional] A map of replaceable strings.
bool $replace_extra_symbols [optional] Add some more replacements e.g. "£" with " pound ".
bool $use_str_to_lower [optional] Use "string to lower" for the input.
bool $use_transliterate [optional] Use ASCII::to_transliterate() for unknown chars.

Return:

string A string that has been converted to an URL slug.

to_transliterate(string $str, string|null $unknown, bool $strict): string

↑ Returns an ASCII version of the string. A set of non-ASCII characters are replaced with their closest ASCII counterparts, and the rest are removed unless instructed otherwise.

EXAMPLE: ASCII::to_transliterate('déjà σσς iıii'); // 'deja sss iiii'

Parameters:

string $str The input string.
string|null $unknown [optional] Character use if character unknown. (default is '?') But you can also use NULL to keep the unknown chars.
bool $strict [optional] Use "transliterator_transliterate()" from PHP-Intl

Return:

string A String that contains only ASCII characters.

Unit Test

Composer is a prerequisite for running the tests.

composer install

The tests can be executed by running this command from the root directory:

./vendor/bin/phpunit

Support

For support and donations please visit Github | Issues | PayPal | Patreon.

For status updates and release announcements please visit Releases | Twitter | Patreon.

For professional support please contact me.

Thanks

Thanks to GitHub (Microsoft) for hosting the code and a good infrastructure including Issues-Managment, etc.
Thanks to IntelliJ as they make the best IDEs for PHP and they gave me an open source license for PhpStorm!
Thanks to Travis CI for being the most awesome, easiest continous integration tool out there!
Thanks to StyleCI for the simple but powerful code style check.
Thanks to PHPStan && Psalm for really great Static analysis tools and for discover bugs in the code!

License and Copyright

Released under the MIT License - see LICENSE.txt for details.

README.md Unescape Escape

🔡 Portable ASCII

Description

Index

Alternative

Install "Portable ASCII" via "composer require"

Why Portable ASCII?

Requirements and Recommendations

Usage

Portable ASCII | API

Class methods

charsArray(bool $replace_extra_symbols): array

charsArrayWithMultiLanguageValues(bool $replace_extra_symbols): array

charsArrayWithOneLanguage(string $language, bool $replace_extra_symbols, bool $asOrigReplaceArray): array

charsArrayWithSingleLanguageValues(bool $replace_extra_symbols, bool $asOrigReplaceArray): array

clean(string $str, bool $normalize_whitespace, bool $keep_non_breaking_space, bool $normalize_msword, bool $remove_invisible_characters): string

getAllLanguages(): string[]

is_ascii(string $str): bool

normalize_msword(string $str): string

normalize_whitespace(string $str, bool $keepNonBreakingSpace, bool $keepBidiUnicodeControls, bool $normalize_control_characters): string

remove_invisible_characters(string $str, bool $url_encoded, string $replacement, bool $keep_basic_control_characters): string

to_ascii(string $str, string $language, bool $remove_unsupported_chars, bool $replace_extra_symbols, bool $use_transliterate, bool|null $replace_single_chars_only): string

to_ascii_remap(string $str1, string $str2): string[]

to_filename(string $str, bool $use_transliterate, string $fallback_char): string

to_slugify(string $str, string $separator, string $language, string[] $replacements, bool $replace_extra_symbols, bool $use_str_to_lower, bool $use_transliterate): string

to_transliterate(string $str, string|null $unknown, bool $strict): string

Unit Test

Support

Thanks

License and Copyright

README.md