<?php
namespace Illuminate\Support;
use Illuminate\Support\Traits\Macroable;
class Str
{
use Macroable;
/**
* The cache of snake-cased words.
*
* @var array
*/
protected static $snakeCache = [];
/**
* The cache of camel-cased words.
*
* @var array
*/
protected static $camelCache = [];
/**
* The cache of studly-cased words.
*
* @var array
*/
protected static $studlyCache = [];
/**
* 在给定值后返回字符串的其余部分。
*
* @param string $subject
* @param string $search
* @return string
*/
public static function after($subject, $search)
{
return $search === '' ? $subject : array_reverse(explode($search, $subject, 2))[0];
}
/**
* 将utf - 8值转换为ASCII。
*
* @param string $value
* @param string $language
* @return string
*/
public static function ascii($value, $language = 'en')
{
$languageSpecific = static::languageSpecificCharsArray($language);
if (! is_null($languageSpecific)) {
$value = str_replace($languageSpecific[0], $languageSpecific[1], $value);
}
foreach (static::charsArray() as $key => $val) {
$value = str_replace($val, $key, $value);
}
return preg_replace('/[^\x20-\x7E]/u', '', $value);
}
/**
* 在给定值之前获取字符串的部分。
*
* @param string $subject
* @param string $search
* @return string
*/
public static function before($subject, $search)
{
return $search === '' ? $subject : explode($search, $subject)[0];
}
/**
* 将值转换为驼峰。
*
* @param string $value
* @return string
*/
public static function camel($value)
{
if (isset(static::$camelCache[$value])) {
return static::$camelCache[$value];
}
return static::$camelCache[$value] = lcfirst(static::studly($value));
}
/**
* 确定给定的字符串是否包含给定的子字符串。
*
* @param string $haystack
* @param string|array $needles
* @return bool
*/
public static function contains($haystack, $needles)
{
foreach ((array) $needles as $needle) {
if ($needle !== '' && mb_strpos($haystack, $needle) !== false) {
return true;
}
}
return false;
}
/**
* 确定一个给定的字符串以给定的子字符串结束。
*
* @param string $haystack
* @param string|array $needles
* @return bool
*/
public static function endsWith($haystack, $needles)
{
foreach ((array) $needles as $needle) {
if (mb_substr($haystack, -mb_strlen($needle)) === (string) $needle) {
return true;
}
}
return false;
}
/**
* 用给定值的单个实例限制字符串
*
* @param string $value
* @param string $cap
* @return string
*/
public static function finish($value, $cap)
{
$quoted = preg_quote($cap, '/');
return preg_replace('/(?:'.$quoted.')+$/u', '', $value).$cap;
}
/**
* 确定给定的字符串是否与给定的模式匹配。
*
* @param string|array $pattern
* @param string $value
* @return bool
*/
public static function is($pattern, $value)
{
$patterns = is_array($pattern) ? $pattern : (array) $pattern;
if (empty($patterns)) {
return false;
}
foreach ($patterns as $pattern) {
// If the given value is an exact match we can of course return true right
// from the beginning. Otherwise, we will translate asterisks and do an
// actual pattern match against the two strings to see if they match.
if ($pattern == $value) {
return true;
}
$pattern = preg_quote($pattern, '#');
// Asterisks are translated into zero-or-more regular expression wildcards
// to make it convenient to check if the strings starts with the given
// pattern such as "library/*", making any string check convenient.
$pattern = str_replace('\*', '.*', $pattern);
if (preg_match('#^'.$pattern.'\z#u', $value) === 1) {
return true;
}
}
return false;
}
/**
* 将字符串转换为kebab。
*
* @param string $value
* @return string
*/
public static function kebab($value)
{
return static::snake($value, '-');
}
/**
* 返回给定字符串的长度。
*
* @param string $value
* @param string $encoding
* @return int
*/
public static function length($value, $encoding = null)
{
if ($encoding) {
return mb_strlen($value, $encoding);
}
return mb_strlen($value);
}
/**
* 限制字符串中的字符数。
*
* @param string $value
* @param int $limit
* @param string $end
* @return string
*/
public static function limit($value, $limit = 100, $end = '...')
{
if (mb_strwidth($value, 'UTF-8') <= $limit) {
return $value;
}
return rtrim(mb_strimwidth($value, 0, $limit, '', 'UTF-8')).$end;
}
/**
* C将给定的字符串转换为小写。
*
* @param string $value
* @return string
*/
public static function lower($value)
{
return mb_strtolower($value, 'UTF-8');
}
/**
* 限制字符串中单词的数量。
*
* @param string $value
* @param int $words
* @param string $end
* @return string
*/
public static function words($value, $words = 100, $end = '...')
{
preg_match('/^\s*+(?:\S++\s*+){1,'.$words.'}/u', $value, $matches);
if (! isset($matches[0]) || static::length($value) === static::length($matches[0])) {
return $value;
}
return rtrim($matches[0]).$end;
}
/**
* 将Class@method样式回调解析为类和方法。
*
* @param string $callback
* @param string|null $default
* @return array
*/
public static function parseCallback($callback, $default = null)
{
return static::contains($callback, '@') ? explode('@', $callback, 2) : [$callback, $default];
}
/**
* 得到一个英语单词的复数形式。
*
* @param string $value
* @param int $count
* @return string
*/
public static function plural($value, $count = 2)
{
return Pluralizer::plural($value, $count);
}
/**
* 生成一个更真实的“随机”字母数字字符串。
*
* @param int $length
* @return string
*/
public static function random($length = 16)
{
$string = '';
while (($len = strlen($string)) < $length) {
$size = $length - $len;
$bytes = random_bytes($size);
$string .= substr(str_replace(['/', '+', '='], '', base64_encode($bytes)), 0, $size);
}
return $string;
}
/**
* 按顺序将字符串中的给定值替换为一个数组。
*
* @param string $search
* @param array $replace
* @param string $subject
* @return string
*/
public static function replaceArray($search, array $replace, $subject)
{
foreach ($replace as $value) {
$subject = static::replaceFirst($search, $value, $subject);
}
return $subject;
}
/**
* 替换字符串中给定值的第一个出现。
*
* @param string $search
* @param string $replace
* @param string $subject
* @return string
*/
public static function replaceFirst($search, $replace, $subject)
{
if ($search == '') {
return $subject;
}
$position = mb_strpos($subject, $search);
if ($position !== false) {
return mb_substr($subject, 0, $position).$replace.mb_substr($subject, $position + mb_strlen($search));
}
return $subject;
}
/**
* 替换字符串中给定值的最后出现。
*
* @param string $search
* @param string $replace
* @param string $subject
* @return string
*/
public static function replaceLast($search, $replace, $subject)
{
$position = mb_strrpos($subject, $search);
if ($position !== false) {
return mb_substr($subject, 0, $position).$replace.mb_substr($subject, $position + mb_strlen($search));
}
return $subject;
}
/**
* 以给定值的单个实例开始一个字符串
*
* @param string $value
* @param string $prefix
* @return string
*/
public static function start($value, $prefix)
{
$quoted = preg_quote($prefix, '/');
return $prefix.preg_replace('/^(?:'.$quoted.')+/u', '', $value);
}
/**
* 将给定字符串转换为大写。
*
* @param string $value
* @return string
*/
public static function upper($value)
{
return mb_strtoupper($value, 'UTF-8');
}
/**
* 将给定字符串转换为标题用例。
*
* @param string $value
* @return string
*/
public static function title($value)
{
return mb_convert_case($value, MB_CASE_TITLE, 'UTF-8');
}
/**
* 得到一个英语单词的单数形式。
*
* @param string $value
* @return string
*/
public static function singular($value)
{
return Pluralizer::singular($value);
}
/**
* 从给定的字符串生成一个URL友好的“slug”。
*
* @param string $title
* @param string $separator
* @param string $language
* @return string
*/
public static function slug($title, $separator = '-', $language = 'en')
{
$title = static::ascii($title, $language);
// Convert all dashes/underscores into separator
$flip = $separator == '-' ? '_' : '-';
$title = preg_replace('!['.preg_quote($flip).']+!u', $separator, $title);
// Replace @ with the word 'at'
$title = str_replace('@', $separator.'at'.$separator, $title);
// Remove all characters that are not the separator, letters, numbers, or whitespace.
$title = preg_replace('![^'.preg_quote($separator).'\pL\pN\s]+!u', '', mb_strtolower($title));
// Replace all separator characters and whitespace by a single separator
$title = preg_replace('!['.preg_quote($separator).'\s]+!u', $separator, $title);
return trim($title, $separator);
}
/**
* 将字符串转换为snake案例
*
* @param string $value
* @param string $delimiter
* @return string
*/
public static function snake($value, $delimiter = '_')
{
$key = $value;
if (isset(static::$snakeCache[$key][$delimiter])) {
return static::$snakeCache[$key][$delimiter];
}
if (! ctype_lower($value)) {
$value = preg_replace('/\s+/u', '', ucwords($value));
$value = static::lower(preg_replace('/(.)(?=[A-Z])/u', '$1'.$delimiter, $value));
}
return static::$snakeCache[$key][$delimiter] = $value;
}
/**
* 确定给定的字符串是否以给定的子字符串开始。
*
* @param string $haystack
* @param string|array $needles
* @return bool
*/
public static function startsWith($haystack, $needles)
{
foreach ((array) $needles as $needle) {
if ($needle !== '' && mb_substr($haystack, 0, mb_strlen($needle)) === (string) $needle) {
return true;
}
}
return false;
}
/**
* 将一个值转换为一个大写的大写字母。
*
* @param string $value
* @return string
*/
public static function studly($value)
{
$key = $value;
if (isset(static::$studlyCache[$key])) {
return static::$studlyCache[$key];
}
$value = ucwords(str_replace(['-', '_'], ' ', $value));
return static::$studlyCache[$key] = str_replace(' ', '', $value);
}
/**
* 返回由起始和长度参数指定的字符串部分。
*
* @param string $string
* @param int $start
* @param int|null $length
* @return string
*/
public static function substr($string, $start, $length = null)
{
return mb_substr($string, $start, $length, 'UTF-8');
}
/**
* 制作一个字符串的第一个字符大写。
*
* @param string $string
* @return string
*/
public static function ucfirst($string)
{
return static::upper(static::substr($string, 0, 1)).static::substr($string, 1);
}
/**
* Returns the replacements for the ascii method.
*
* Note: Adapted from Stringy\Stringy.
*
* @see https://github.com/danielstjules/Stringy/blob/3.1.0/LICENSE.txt
*
* @return array
*/
protected static function charsArray()
{
static $charsArray;
if (isset($charsArray)) {
return $charsArray;
}
return $charsArray = [
'0' => ['°', '₀', '۰', '０'],
'1' => ['¹', '₁', '۱', '１'],
'2' => ['²', '₂', '۲', '２'],
'3' => ['³', '₃', '۳', '３'],
'4' => ['⁴', '₄', '۴', '٤', '４'],
'5' => ['⁵', '₅', '۵', '٥', '５'],
'6' => ['⁶', '₆', '۶', '٦', '６'],
'7' => ['⁷', '₇', '۷', '７'],
'8' => ['⁸', '₈', '۸', '８'],
'9' => ['⁹', '₉', '۹', '９'],
'a' => ['à', 'á', 'ả', 'ã', 'ạ', 'ă', 'ắ', 'ằ', 'ẳ', 'ẵ', 'ặ', 'â', 'ấ', 'ầ', 'ẩ', 'ẫ', 'ậ', 'ā', 'ą', 'å', 'α', 'ά', 'ἀ', 'ἁ', 'ἂ', 'ἃ', 'ἄ', 'ἅ', 'ἆ', 'ἇ', 'ᾀ', 'ᾁ', 'ᾂ', 'ᾃ', 'ᾄ', 'ᾅ', 'ᾆ', 'ᾇ', 'ὰ', 'ά', 'ᾰ', 'ᾱ', 'ᾲ', 'ᾳ', 'ᾴ', 'ᾶ', 'ᾷ', 'а', 'أ', 'အ', 'ာ', 'ါ', 'ǻ', 'ǎ', 'ª', 'ა', 'अ', 'ا', 'ａ', 'ä'],
'b' => ['б', 'β', 'ب', 'ဗ', 'ბ', 'ｂ'],
'c' => ['ç', 'ć', 'č', 'ĉ', 'ċ', 'ｃ'],
'd' => ['ď', 'ð', 'đ', 'ƌ', 'ȡ', 'ɖ', 'ɗ', 'ᵭ', 'ᶁ', 'ᶑ', 'д', 'δ', 'د', 'ض', 'ဍ', 'ဒ', 'დ', 'ｄ'],
'e' => ['é', 'è', 'ẻ', 'ẽ', 'ẹ', 'ê', 'ế', 'ề', 'ể', 'ễ', 'ệ', 'ë', 'ē', 'ę', 'ě', 'ĕ', 'ė', 'ε', 'έ', 'ἐ', 'ἑ', 'ἒ', 'ἓ', 'ἔ', 'ἕ', 'ὲ', 'έ', 'е', 'ё', 'э', 'є', 'ə', 'ဧ', 'ေ', 'ဲ', 'ე', 'ए', 'إ', 'ئ', 'ｅ'],
'f' => ['ф', 'φ', 'ف', 'ƒ', 'ფ', 'ｆ'],
'g' => ['ĝ', 'ğ', 'ġ', 'ģ', 'г', 'ґ', 'γ', 'ဂ', 'გ', 'گ', 'ｇ'],
'h' => ['ĥ', 'ħ', 'η', 'ή', 'ح', 'ه', 'ဟ', 'ှ', 'ჰ', 'ｈ'],
'i' => ['í', 'ì', 'ỉ', 'ĩ', 'ị', 'î', 'ï', 'ī', 'ĭ', 'į', 'ı', 'ι', 'ί', 'ϊ', 'ΐ', 'ἰ', 'ἱ', 'ἲ', 'ἳ', 'ἴ', 'ἵ', 'ἶ', 'ἷ', 'ὶ', 'ί', 'ῐ', 'ῑ', 'ῒ', 'ΐ', 'ῖ', 'ῗ', 'і', 'ї', 'и', 'ဣ', 'ိ', 'ီ', 'ည်', 'ǐ', 'ი', 'इ', 'ی', 'ｉ'],
'j' => ['ĵ', 'ј', 'Ј', 'ჯ', 'ج', 'ｊ'],
'k' => ['ķ', 'ĸ', 'к', 'κ', 'Ķ', 'ق', 'ك', 'က', 'კ', 'ქ', 'ک', 'ｋ'],
'l' => ['ł', 'ľ', 'ĺ', 'ļ', 'ŀ', 'л', 'λ', 'ل', 'လ', 'ლ', 'ｌ'],
'm' => ['м', 'μ', 'م', 'မ', 'მ', 'ｍ'],
'n' => ['ñ', 'ń', 'ň', 'ņ', 'ʼn', 'ŋ', 'ν', 'н', 'ن', 'န', 'ნ', 'ｎ'],
'o' => ['ó', 'ò', 'ỏ', 'õ', 'ọ', 'ô', 'ố', 'ồ', 'ổ', 'ỗ', 'ộ', 'ơ', 'ớ', 'ờ', 'ở', 'ỡ', 'ợ', 'ø', 'ō', 'ő', 'ŏ', 'ο', 'ὀ', 'ὁ', 'ὂ', 'ὃ', 'ὄ', 'ὅ', 'ὸ', 'ό', 'о', 'و', 'θ', 'ို', 'ǒ', 'ǿ', 'º', 'ო', 'ओ', 'ｏ', 'ö'],
'p' => ['п', 'π', 'ပ', 'პ', 'پ', 'ｐ'],
'q' => ['ყ', 'ｑ'],
'r' => ['ŕ', 'ř', 'ŗ', 'р', 'ρ', 'ر', 'რ', 'ｒ'],
's' => ['ś', 'š', 'ş', 'с', 'σ', 'ș', 'ς', 'س', 'ص', 'စ', 'ſ', 'ს', 'ｓ'],
't' => ['ť', 'ţ', 'т', 'τ', 'ț', 'ت', 'ط', 'ဋ', 'တ', 'ŧ', 'თ', 'ტ', 'ｔ'],
'u' => ['ú', 'ù', 'ủ', 'ũ', 'ụ', 'ư', 'ứ', 'ừ', 'ử', 'ữ', 'ự', 'û', 'ū', 'ů', 'ű', 'ŭ', 'ų', 'µ', 'у', 'ဉ', 'ု', 'ူ', 'ǔ', 'ǖ', 'ǘ', 'ǚ', 'ǜ', 'უ', 'उ', 'ｕ', 'ў', 'ü'],
'v' => ['в', 'ვ', 'ϐ', 'ｖ'],
'w' => ['ŵ', 'ω', 'ώ', 'ဝ', 'ွ', 'ｗ'],
'x' => ['χ', 'ξ', 'ｘ'],
'y' => ['ý', 'ỳ', 'ỷ', 'ỹ', 'ỵ', 'ÿ', 'ŷ', 'й', 'ы', 'υ', 'ϋ', 'ύ', 'ΰ', 'ي', 'ယ', 'ｙ'],
'z' => ['ź', 'ž', 'ż', 'з', 'ζ', 'ز', 'ဇ', 'ზ', 'ｚ'],
'aa' => ['ع', 'आ', 'آ'],
'ae' => ['æ', 'ǽ'],
'ai' => ['ऐ'],
'ch' => ['ч', 'ჩ', 'ჭ', 'چ'],
'dj' => ['ђ', 'đ'],
'dz' => ['џ', 'ძ'],
'ei' => ['ऍ'],
'gh' => ['غ', 'ღ'],
'ii' => ['ई'],
'ij' => ['ij'],
'kh' => ['х', 'خ', 'ხ'],
'lj' => ['љ'],
'nj' => ['њ'],
'oe' => ['ö', 'œ', 'ؤ'],
'oi' => ['ऑ'],
'oii' => ['ऒ'],
'ps' => ['ψ'],
'sh' => ['ш', 'შ', 'ش'],
'shch' => ['щ'],
'ss' => ['ß'],
'sx' => ['ŝ'],
'th' => ['þ', 'ϑ', 'ث', 'ذ', 'ظ'],
'ts' => ['ц', 'ც', 'წ'],
'ue' => ['ü'],
'uu' => ['ऊ'],
'ya' => ['я'],
'yu' => ['ю'],
'zh' => ['ж', 'ჟ', 'ژ'],
'(c)' => ['©'],
'A' => ['Á', 'À', 'Ả', 'Ã', 'Ạ', 'Ă', 'Ắ', 'Ằ', 'Ẳ', 'Ẵ', 'Ặ', 'Â', 'Ấ', 'Ầ', 'Ẩ', 'Ẫ', 'Ậ', 'Å', 'Ā', 'Ą', 'Α', 'Ά', 'Ἀ', 'Ἁ', 'Ἂ', 'Ἃ', 'Ἄ', 'Ἅ', 'Ἆ', 'Ἇ', 'ᾈ', 'ᾉ', 'ᾊ', 'ᾋ', 'ᾌ', 'ᾍ', 'ᾎ', 'ᾏ', 'Ᾰ', 'Ᾱ', 'Ὰ', 'Ά', 'ᾼ', 'А', 'Ǻ', 'Ǎ', 'Ａ', 'Ä'],
'B' => ['Б', 'Β', 'ब', 'Ｂ'],
'C' => ['Ç', 'Ć', 'Č', 'Ĉ', 'Ċ', 'Ｃ'],
'D' => ['Ď', 'Ð', 'Đ', 'Ɖ', 'Ɗ', 'Ƌ', 'ᴅ', 'ᴆ', 'Д', 'Δ', 'Ｄ'],
'E' => ['É', 'È', 'Ẻ', 'Ẽ', 'Ẹ', 'Ê', 'Ế', 'Ề', 'Ể', 'Ễ', 'Ệ', 'Ë', 'Ē', 'Ę', 'Ě', 'Ĕ', 'Ė', 'Ε', 'Έ', 'Ἐ', 'Ἑ', 'Ἒ', 'Ἓ', 'Ἔ', 'Ἕ', 'Έ', 'Ὲ', 'Е', 'Ё', 'Э', 'Є', 'Ə', 'Ｅ'],
'F' => ['Ф', 'Φ', 'Ｆ'],
'G' => ['Ğ', 'Ġ', 'Ģ', 'Г', 'Ґ', 'Γ', 'Ｇ'],
'H' => ['Η', 'Ή', 'Ħ', 'Ｈ'],
'I' => ['Í', 'Ì', 'Ỉ', 'Ĩ', 'Ị', 'Î', 'Ï', 'Ī', 'Ĭ', 'Į', 'İ', 'Ι', 'Ί', 'Ϊ', 'Ἰ', 'Ἱ', 'Ἳ', 'Ἴ', 'Ἵ', 'Ἶ', 'Ἷ', 'Ῐ', 'Ῑ', 'Ὶ', 'Ί', 'И', 'І', 'Ї', 'Ǐ', 'ϒ', 'Ｉ'],
'J' => ['Ｊ'],
'K' => ['К', 'Κ', 'Ｋ'],
'L' => ['Ĺ', 'Ł', 'Л', 'Λ', 'Ļ', 'Ľ', 'Ŀ', 'ल', 'Ｌ'],
'M' => ['М', 'Μ', 'Ｍ'],
'N' => ['Ń', 'Ñ', 'Ň', 'Ņ', 'Ŋ', 'Н', 'Ν', 'Ｎ'],
'O' => ['Ó', 'Ò', 'Ỏ', 'Õ', 'Ọ', 'Ô', 'Ố', 'Ồ', 'Ổ', 'Ỗ', 'Ộ', 'Ơ', 'Ớ', 'Ờ', 'Ở', 'Ỡ', 'Ợ', 'Ø', 'Ō', 'Ő', 'Ŏ', 'Ο', 'Ό', 'Ὀ', 'Ὁ', 'Ὂ', 'Ὃ', 'Ὄ', 'Ὅ', 'Ὸ', 'Ό', 'О', 'Θ', 'Ө', 'Ǒ', 'Ǿ', 'Ｏ', 'Ö'],
'P' => ['П', 'Π', 'Ｐ'],
'Q' => ['Ｑ'],
'R' => ['Ř', 'Ŕ', 'Р', 'Ρ', 'Ŗ', 'Ｒ'],
'S' => ['Ş', 'Ŝ', 'Ș', 'Š', 'Ś', 'С', 'Σ', 'Ｓ'],
'T' => ['Ť', 'Ţ', 'Ŧ', 'Ț', 'Т', 'Τ', 'Ｔ'],
'U' => ['Ú', 'Ù', 'Ủ', 'Ũ', 'Ụ', 'Ư', 'Ứ', 'Ừ', 'Ử', 'Ữ', 'Ự', 'Û', 'Ū', 'Ů', 'Ű', 'Ŭ', 'Ų', 'У', 'Ǔ', 'Ǖ', 'Ǘ', 'Ǚ', 'Ǜ', 'Ｕ', 'Ў', 'Ü'],
'V' => ['В', 'Ｖ'],
'W' => ['Ω', 'Ώ', 'Ŵ', 'Ｗ'],
'X' => ['Χ', 'Ξ', 'Ｘ'],
'Y' => ['Ý', 'Ỳ', 'Ỷ', 'Ỹ', 'Ỵ', 'Ÿ', 'Ῠ', 'Ῡ', 'Ὺ', 'Ύ', 'Ы', 'Й', 'Υ', 'Ϋ', 'Ŷ', 'Ｙ'],
'Z' => ['Ź', 'Ž', 'Ż', 'З', 'Ζ', 'Ｚ'],
'AE' => ['Æ', 'Ǽ'],
'Ch' => ['Ч'],
'Dj' => ['Ђ'],
'Dz' => ['Џ'],
'Gx' => ['Ĝ'],
'Hx' => ['Ĥ'],
'Ij' => ['IJ'],
'Jx' => ['Ĵ'],
'Kh' => ['Х'],
'Lj' => ['Љ'],
'Nj' => ['Њ'],
'Oe' => ['Œ'],
'Ps' => ['Ψ'],
'Sh' => ['Ш'],
'Shch' => ['Щ'],
'Ss' => ['ẞ'],
'Th' => ['Þ'],
'Ts' => ['Ц'],
'Ya' => ['Я'],
'Yu' => ['Ю'],
'Zh' => ['Ж'],
' ' => ["\xC2\xA0", "\xE2\x80\x80", "\xE2\x80\x81", "\xE2\x80\x82", "\xE2\x80\x83", "\xE2\x80\x84", "\xE2\x80\x85", "\xE2\x80\x86", "\xE2\x80\x87", "\xE2\x80\x88", "\xE2\x80\x89", "\xE2\x80\x8A", "\xE2\x80\xAF", "\xE2\x81\x9F", "\xE3\x80\x80", "\xEF\xBE\xA0"],
];
}
/**
* Returns the language specific replacements for the ascii method.
*
* Note: Adapted from Stringy\Stringy.
*
* @see https://github.com/danielstjules/Stringy/blob/3.1.0/LICENSE.txt
*
* @param string $language
* @return array|null
*/
protected static function languageSpecificCharsArray($language)
{
static $languageSpecific;
if (! isset($languageSpecific)) {
$languageSpecific = [
'bg' => [
['х', 'Х', 'щ', 'Щ', 'ъ', 'Ъ', 'ь', 'Ь'],
['h', 'H', 'sht', 'SHT', 'a', 'А', 'y', 'Y'],
],
'de' => [
['ä', 'ö', 'ü', 'Ä', 'Ö', 'Ü'],
['ae', 'oe', 'ue', 'AE', 'OE', 'UE'],
],
];
}
return $languageSpecific[$language] ?? null;
}
}
