Str::endsWith()   A
last analyzed

Complexity

Conditions 3
Paths 3

Size

Total Lines 9
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 4
CRAP Score 3.072

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 3
eloc 5
c 1
b 0
f 0
nc 3
nop 2
dl 0
loc 9
ccs 4
cts 5
cp 0.8
crap 3.072
rs 9.6666
1
<?php
2
/**
3
 * Created by rozbo at 2017/3/18 下午9:03
4
 */
5
6
namespace puck\tools;
7
8
9
class Str {
10
    /**
11
     * The cache of snake-cased words.
12
     *
13
     * @var array
14
     */
15
    protected static $snakeCache = [];
16
    /**
17
     * The cache of camel-cased words.
18
     *
19
     * @var array
20
     */
21
    protected static $camelCache = [];
22
    /**
23
     * The cache of studly-cased words.
24
     *
25
     * @var array
26
     */
27
    protected static $studlyCache = [];
28
29
    /**
30
     * 判断一个字符串是否以给定字符串开始
31
     *
32
     * @param  string  $haystack
33
     * @param  string|array  $needles
34
     * @return bool
35
     */
36 3
    public static function startsWith($haystack, $needles)
37
    {
38 3
        foreach ((array) $needles as $needle) {
39 3
            if ($needle != '' && substr($haystack, 0, strlen($needle)) === (string) $needle) {
40 3
                return true;
41
            }
42
        }
43
        return false;
44
    }
45
46
    /**
47
     * 判断一个字符串是否以给定字符串结尾
48
     *
49
     * @param  string  $haystack
50
     * @param  string|array  $needles
51
     * @return bool
52
     */
53 1
    public static function endsWith($haystack, $needles)
54
    {
55 1
        foreach ((array) $needles as $needle) {
56 1
            if (substr($haystack, -strlen($needle)) === (string) $needle) {
57 1
                return true;
58
            }
59
        }
60
        return false;
61
    }
62
63
    /**
64
     * Convert a value to camel case.
65
     *
66
     * @param  string $value
67
     * @return string
68
     */
69
    public static function camel($value) {
70
        if (isset(static::$camelCache[$value])) {
71
            return static::$camelCache[$value];
72
        }
73
74
        return static::$camelCache[$value] = lcfirst(static::studly($value));
75
    }
76
77
    /**
78
     * Convert a value to studly caps case.
79
     *
80
     * @param  string $value
81
     * @return string
82
     */
83 1
    public static function studly($value) {
84 1
        $key = $value;
85
86 1
        if (isset(static::$studlyCache[$key])) {
87
            return static::$studlyCache[$key];
88
        }
89
90 1
        $value = ucwords(str_replace(['-', '_'], ' ', $value));
91
92 1
        return static::$studlyCache[$key] = str_replace(' ', '', $value);
93
    }
94
95
    /**
96
     * Cap a string with a single instance of a given value.
97
     *
98
     * @param  string $value
99
     * @param  string $cap
100
     * @return string
101
     */
102
    public static function finish($value, $cap) {
103
        $quoted = preg_quote($cap, '/');
104
105
        return preg_replace('/(?:' . $quoted . ')+$/u', '', $value) . $cap;
106
    }
107
108
    /**
109
     * Determine if a given string matches a given pattern.
110
     *
111
     * @param  string $pattern
112
     * @param  string $value
113
     * @return bool
114
     */
115
    public static function is($pattern, $value) {
116
        if ($pattern == $value) {
117
            return true;
118
        }
119
120
        $pattern = preg_quote($pattern, '#');
121
122
        // Asterisks are translated into zero-or-more regular expression wildcards
123
        // to make it convenient to check if the strings starts with the given
124
        // pattern such as "library/*", making any string check convenient.
125
        $pattern = str_replace('\*', '.*', $pattern);
126
127
        return (bool)preg_match('#^' . $pattern . '\z#u', $value);
128
    }
129
130
    /**
131
     * Convert a string to kebab case.
132
     *
133
     * @param  string $value
134
     * @return string
135
     */
136
    public static function kebab($value) {
137
        return static::snake($value, '-');
138
    }
139
140
    /**
141
     * Convert a string to snake case.
142
     *
143
     * @param  string $value
144
     * @param  string $delimiter
145
     * @return string
146
     */
147
    public static function snake($value, $delimiter = '_') {
148
        $key = $value;
149
150
        if (isset(static::$snakeCache[$key][$delimiter])) {
151
            return static::$snakeCache[$key][$delimiter];
152
        }
153
154
        if (!ctype_lower($value)) {
155
            $value = preg_replace('/\s+/u', '', $value);
156
157
            $value = static::lower(preg_replace('/(.)(?=[A-Z])/u', '$1' . $delimiter, $value));
158
        }
159
160
        return static::$snakeCache[$key][$delimiter] = $value;
161
    }
162
163
    /**
164
     * Convert the given string to lower-case.
165
     *
166
     * @param  string $value
167
     * @return string
168
     */
169
    public static function lower($value) {
170
        return mb_strtolower($value, 'UTF-8');
171
    }
172
173
    /**
174
     * Limit the number of characters in a string.
175
     *
176
     * @param  string $value
177
     * @param  int $limit
178
     * @param  string $end
179
     * @return string
180
     */
181
    public static function limit($value, $limit = 100, $end = '...') {
182
        if (mb_strwidth($value, 'UTF-8') <= $limit) {
183
            return $value;
184
        }
185
186
        return rtrim(mb_strimwidth($value, 0, $limit, '', 'UTF-8')) . $end;
187
    }
188
189
    /**
190
     * Limit the number of words in a string.
191
     *
192
     * @param  string $value
193
     * @param  int $words
194
     * @param  string $end
195
     * @return string
196
     */
197
    public static function words($value, $words = 100, $end = '...') {
198
        preg_match('/^\s*+(?:\S++\s*+){1,' . $words . '}/u', $value, $matches);
199
200
        if (!isset($matches[0]) || static::length($value) === static::length($matches[0])) {
201
            return $value;
202
        }
203
204
        return rtrim($matches[0]) . $end;
205
    }
206
207
    /**
208
     * Return the length of the given string.
209
     *
210
     * @param  string $value
211
     * @return int
212
     */
213
    public static function length($value) {
214
        return mb_strlen($value);
215
    }
216
217
    /**
218
     * Parse a Class@method style callback into class and method.
219
     *
220
     * @param  string $callback
221
     * @param  string|null $default
222
     * @return array
223
     */
224
    public static function parseCallback($callback, $default = null) {
225
        return static::contains($callback, '@') ? explode('@', $callback, 2) : [$callback, $default];
226
    }
227
228
    /**
229
     * 判断一个字符串是否包含于另一个字符中
230
     *
231
     * @param  string $haystack
232
     * @param  string|array $needles
233
     * @return bool
234
     */
235 1
    public static function contains($haystack, $needles) {
236 1
        foreach ((array)$needles as $needle) {
237 1
            if ($needle != '' && mb_strpos($haystack, $needle) !== false) {
238 1
                return true;
239
            }
240
        }
241
        return false;
242
    }
243
244
    /**
245
     * Get the plural form of an English word.
246
     *
247
     * @param  string $value
248
     * @param  int $count
249
     * @return string
250
     */
251
    public static function plural($value, $count = 2) {
252
        return Pluralizer::plural($value, $count);
253
    }
254
255
    /**
256
     * Generate a "random" alpha-numeric string.
257
     *
258
     * Should not be considered sufficient for cryptography, etc.
259
     *
260
     * @deprecated since version 5.3. Use the "random" method directly.
261
     *
262
     * @param  int $length
263
     * @return string
264
     */
265
    public static function quickRandom($length = 16) {
266
        if (PHP_MAJOR_VERSION > 5) {
267
            return static::random($length);
268
        }
269
270
        $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
271
272
        return substr(str_shuffle(str_repeat($pool, $length)), 0, $length);
273
    }
274
275
    /**
276
     * Generate a more truly "random" alpha-numeric string.
277
     *
278
     * @param  int $length
279
     * @return string
280
     */
281
    public static function random($length = 16) {
282
        $string = '';
283
284
        while (($len = strlen($string)) < $length) {
285
            $size = $length - $len;
286
287
            $bytes = random_bytes($size);
288
289
            $string .= substr(str_replace(['/', '+', '='], '', base64_encode($bytes)), 0, $size);
290
        }
291
292
        return $string;
293
    }
294
295
    /**
296
     * Replace a given value in the string sequentially with an array.
297
     *
298
     * @param  string $search
299
     * @param  array $replace
300
     * @param  string $subject
301
     * @return string
302
     */
303
    public static function replaceArray($search, array $replace, $subject) {
304
        foreach ($replace as $value) {
305
            $subject = static::replaceFirst($search, $value, $subject);
306
        }
307
308
        return $subject;
309
    }
310
311
    /**
312
     * Replace the first occurrence of a given value in the string.
313
     *
314
     * @param  string $search
315
     * @param  string $replace
316
     * @param  string $subject
317
     * @return string
318
     */
319
    public static function replaceFirst($search, $replace, $subject) {
320
        $position = strpos($subject, $search);
321
322
        if ($position !== false) {
323
            return substr_replace($subject, $replace, $position, strlen($search));
324
        }
325
326
        return $subject;
327
    }
328
329
    /**
330
     * Replace the last occurrence of a given value in the string.
331
     *
332
     * @param  string $search
333
     * @param  string $replace
334
     * @param  string $subject
335
     * @return string
336
     */
337
    public static function replaceLast($search, $replace, $subject) {
338
        $position = strrpos($subject, $search);
339
340
        if ($position !== false) {
341
            return substr_replace($subject, $replace, $position, strlen($search));
342
        }
343
344
        return $subject;
345
    }
346
347
    /**
348
     * Convert the given string to title case.
349
     *
350
     * @param  string $value
351
     * @return string
352
     */
353
    public static function title($value) {
354
        return mb_convert_case($value, MB_CASE_TITLE, 'UTF-8');
355
    }
356
357
    /**
358
     * Get the singular form of an English word.
359
     *
360
     * @param  string $value
361
     * @return string
362
     */
363
    public static function singular($value) {
364
        return Pluralizer::singular($value);
365
    }
366
367
    /**
368
     * Generate a URL friendly "slug" from a given string.
369
     *
370
     * @param  string $title
371
     * @param  string $separator
372
     * @return string
373
     */
374
    public static function slug($title, $separator = '-') {
375
        $title = static::ascii($title);
376
377
        // Convert all dashes/underscores into separator
378
        $flip = $separator == '-' ? '_' : '-';
379
380
        $title = preg_replace('![' . preg_quote($flip) . ']+!u', $separator, $title);
381
382
        // Remove all characters that are not the separator, letters, numbers, or whitespace.
383
        $title = preg_replace('![^' . preg_quote($separator) . '\pL\pN\s]+!u', '', mb_strtolower($title));
384
385
        // Replace all separator characters and whitespace by a single separator
386
        $title = preg_replace('![' . preg_quote($separator) . '\s]+!u', $separator, $title);
387
388
        return trim($title, $separator);
389
    }
390
391
    /**
392
     * Transliterate a UTF-8 value to ASCII.
393
     *
394
     * @param  string $value
395
     * @return string
396
     */
397
    public static function ascii($value) {
398
        foreach (static::charsArray() as $key => $val) {
399
            $value = str_replace($val, $key, $value);
400
        }
401
402
        return preg_replace('/[^\x20-\x7E]/u', '', $value);
403
    }
404
405
    /**
406
     * Returns the replacements for the ascii method.
407
     *
408
     * Note: Adapted from Stringy\Stringy.
409
     *
410
     * @see https://github.com/danielstjules/Stringy/blob/2.3.1/LICENSE.txt
411
     *
412
     * @return array
413
     */
414
    protected static function charsArray() {
415
        static $charsArray;
416
417
        if (isset($charsArray)) {
418
            return $charsArray;
419
        }
420
421
        return $charsArray = [
422
            '0' => ['°', '₀', '۰'],
423
            '1' => ['¹', '₁', '۱'],
424
            '2' => ['²', '₂', '۲'],
425
            '3' => ['³', '₃', '۳'],
426
            '4' => ['⁴', '₄', '۴', '٤'],
427
            '5' => ['⁵', '₅', '۵', '٥'],
428
            '6' => ['⁶', '₆', '۶', '٦'],
429
            '7' => ['⁷', '₇', '۷'],
430
            '8' => ['⁸', '₈', '۸'],
431
            '9' => ['⁹', '₉', '۹'],
432
            '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'],
433
            'b' => ['б', 'β', 'Ъ', 'Ь', 'ب', 'ဗ', 'ბ'],
434
            'c' => ['ç', 'ć', 'č', 'ĉ', 'ċ'],
435
            'd' => ['ď', 'ð', 'đ', 'ƌ', 'ȡ', 'ɖ', 'ɗ', 'ᵭ', 'ᶁ', 'ᶑ', 'д', 'δ', 'د', 'ض', 'ဍ', 'ဒ', 'დ'],
436
            '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'],
437
            'f' => ['ф', 'φ', 'ف', 'ƒ', 'ფ'],
438
            'g' => ['ĝ', 'ğ', 'ġ', 'ģ', 'г', 'ґ', 'γ', 'ဂ', 'გ', 'گ'],
439
            'h' => ['ĥ', 'ħ', 'η', 'ή', 'ح', 'ه', 'ဟ', 'ှ', 'ჰ'],
440
            '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'],
441
            'j' => ['ĵ', 'ј', 'Ј', 'ჯ', 'ج'],
442
            'k' => ['ķ', 'ĸ', 'к', 'κ', 'Ķ', 'ق', 'ك', 'က', 'კ', 'ქ', 'ک'],
443
            'l' => ['ł', 'ľ', 'ĺ', 'ļ', 'ŀ', 'л', 'λ', 'ل', 'လ', 'ლ'],
444
            'm' => ['м', 'μ', 'م', 'မ', 'მ'],
445
            'n' => ['ñ', 'ń', 'ň', 'ņ', 'ʼn', 'ŋ', 'ν', 'н', 'ن', 'န', 'ნ'],
446
            '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'],
447
            'p' => ['п', 'π', 'ပ', 'პ', 'پ'],
448
            'q' => ['ყ'],
449
            'r' => ['ŕ', 'ř', 'ŗ', 'р', 'ρ', 'ر', 'რ'],
450
            's' => ['ś', 'š', 'ş', 'с', 'σ', 'ș', 'ς', 'س', 'ص', 'စ', 'ſ', 'ს'],
451
            't' => ['ť', 'ţ', 'т', 'τ', 'ț', 'ت', 'ط', 'ဋ', 'တ', 'ŧ', 'თ', 'ტ'],
452
            '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'],
453
            'v' => ['в', 'ვ', 'ϐ'],
454
            'w' => ['ŵ', 'ω', 'ώ', 'ဝ', 'ွ'],
455
            'x' => ['χ', 'ξ'],
456
            'y' => ['ý', 'ỳ', 'ỷ', 'ỹ', 'ỵ', 'ÿ', 'ŷ', 'й', 'ы', 'υ', 'ϋ', 'ύ', 'ΰ', 'ي', 'ယ'],
457
            'z' => ['ź', 'ž', 'ż', 'з', 'ζ', 'ز', 'ဇ', 'ზ'],
458
            'aa' => ['ع', 'आ', 'آ'],
459
            'ae' => ['ä', 'æ', 'ǽ'],
460
            'ai' => ['ऐ'],
461
            'at' => ['@'],
462
            'ch' => ['ч', 'ჩ', 'ჭ', 'چ'],
463
            'dj' => ['ђ', 'đ'],
464
            'dz' => ['џ', 'ძ'],
465
            'ei' => ['ऍ'],
466
            'gh' => ['غ', 'ღ'],
467
            'ii' => ['ई'],
468
            'ij' => ['ij'],
469
            'kh' => ['х', 'خ', 'ხ'],
470
            'lj' => ['љ'],
471
            'nj' => ['њ'],
472
            'oe' => ['ö', 'œ', 'ؤ'],
473
            'oi' => ['ऑ'],
474
            'oii' => ['ऒ'],
475
            'ps' => ['ψ'],
476
            'sh' => ['ш', 'შ', 'ش'],
477
            'shch' => ['щ'],
478
            'ss' => ['ß'],
479
            'sx' => ['ŝ'],
480
            'th' => ['þ', 'ϑ', 'ث', 'ذ', 'ظ'],
481
            'ts' => ['ц', 'ც', 'წ'],
482
            'ue' => ['ü'],
483
            'uu' => ['ऊ'],
484
            'ya' => ['я'],
485
            'yu' => ['ю'],
486
            'zh' => ['ж', 'ჟ', 'ژ'],
487
            '(c)' => ['©'],
488
            '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'],
489
            'B' => ['Б', 'Β', 'ब'],
490
            'C' => ['Ç', 'Ć', 'Č', 'Ĉ', 'Ċ'],
491
            'D' => ['Ď', 'Ð', 'Đ', 'Ɖ', 'Ɗ', 'Ƌ', 'ᴅ', 'ᴆ', 'Д', 'Δ'],
492
            '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'],
493
            'F' => ['Ф', 'Φ'],
494
            'G' => ['Ğ', 'Ġ', 'Ģ', 'Г', 'Ґ', 'Γ'],
495
            'H' => ['Η', 'Ή', 'Ħ'],
496
            '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'],
497
            'K' => ['К', 'Κ'],
498
            'L' => ['Ĺ', 'Ł', 'Л', 'Λ', 'Ļ', 'Ľ', 'Ŀ', 'ल'],
499
            'M' => ['М', 'Μ'],
500
            'N' => ['Ń', 'Ñ', 'Ň', 'Ņ', 'Ŋ', 'Н', 'Ν'],
501
            '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'],
502
            'P' => ['П', 'Π'],
503
            'R' => ['Ř', 'Ŕ', 'Р', 'Ρ', 'Ŗ'],
504
            'S' => ['Ş', 'Ŝ', 'Ș', 'Š', 'Ś', 'С', 'Σ'],
505
            'T' => ['Ť', 'Ţ', 'Ŧ', 'Ț', 'Т', 'Τ'],
506
            'U' => ['Ú', 'Ù', 'Ủ', 'Ũ', 'Ụ', 'Ư', 'Ứ', 'Ừ', 'Ử', 'Ữ', 'Ự', 'Û', 'Ū', 'Ů', 'Ű', 'Ŭ', 'Ų', 'У', 'Ǔ', 'Ǖ', 'Ǘ', 'Ǚ', 'Ǜ'],
507
            'V' => ['В'],
508
            'W' => ['Ω', 'Ώ', 'Ŵ'],
509
            'X' => ['Χ', 'Ξ'],
510
            'Y' => ['Ý', 'Ỳ', 'Ỷ', 'Ỹ', 'Ỵ', 'Ÿ', 'Ῠ', 'Ῡ', 'Ὺ', 'Ύ', 'Ы', 'Й', 'Υ', 'Ϋ', 'Ŷ'],
511
            'Z' => ['Ź', 'Ž', 'Ż', 'З', 'Ζ'],
512
            'AE' => ['Ä', 'Æ', 'Ǽ'],
513
            'CH' => ['Ч'],
514
            'DJ' => ['Ђ'],
515
            'DZ' => ['Џ'],
516
            'GX' => ['Ĝ'],
517
            'HX' => ['Ĥ'],
518
            'IJ' => ['IJ'],
519
            'JX' => ['Ĵ'],
520
            'KH' => ['Х'],
521
            'LJ' => ['Љ'],
522
            'NJ' => ['Њ'],
523
            'OE' => ['Ö', 'Œ'],
524
            'PS' => ['Ψ'],
525
            'SH' => ['Ш'],
526
            'SHCH' => ['Щ'],
527
            'SS' => ['ẞ'],
528
            'TH' => ['Þ'],
529
            'TS' => ['Ц'],
530
            'UE' => ['Ü'],
531
            'YA' => ['Я'],
532
            'YU' => ['Ю'],
533
            'ZH' => ['Ж'],
534
            ' ' => ["\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"],
535
        ];
536
    }
537
538
    /**
539
     * Make a string's first character uppercase.
540
     *
541
     * @param  string $string
542
     * @return string
543
     */
544
    public static function ucfirst($string) {
545
        return static::upper(static::substr($string, 0, 1)) . static::substr($string, 1);
546
    }
547
548
    /**
549
     * Convert the given string to upper-case.
550
     *
551
     * @param  string $value
552
     * @return string
553
     */
554
    public static function upper($value) {
555
        return mb_strtoupper($value, 'UTF-8');
556
    }
557
558
    /**
559
     * Returns the portion of string specified by the start and length parameters.
560
     *
561
     * @param  string $string
562
     * @param  int $start
563
     * @param  int|null $length
564
     * @return string
565
     */
566
    public static function substr($string, $start, $length = null) {
567
        return mb_substr($string, $start, $length, 'UTF-8');
568
    }
569
}