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Editing: Initials.php

<?php

namespace LasseRafn\Initials;

class Initials
{
    protected $length = 2;
    protected $initials = 'JD';
    protected $keepCase = false;
    protected $allowSpecialCharacters = true;
    protected $name = 'John Doe';

/**
     * Set the name used for generating initials.
     *
     * @param string $nameOrInitials
     *
     * @return Initials
     */
    public function name($nameOrInitials)
    {
        $this->generate($nameOrInitials);

return $this;
    }

/**
     * Set if should keep lettercase on name.
     * Setting this to false (default) will uppercase the name.
     *
     * @param boolean $keepCase
     *
     * @return Initials
     */
    public function keepCase($keepCase = true)
    {
        $this->keepCase = $keepCase;

return $this;
    }

/**
     * Set if should allow (or remove) special characters.
     *
     * @param boolean $allowSpecialCharacters
     *
     * @return Initials
     */
    public function allowSpecialCharacters($allowSpecialCharacters = true)
    {
        $this->allowSpecialCharacters = $allowSpecialCharacters;

return $this;
    }

/**
     * Set the length of the generated initials.
     *
     * @param int $length
     *
     * @return Initials
     */
    public function length($length = 2)
    {
        $this->length = (int) $length;
        $this->initials = $this->generateInitials();

return $this;
    }

/**
     * Generate the initials.
     *
     * @param null|string $name
     *
     * @return string
     */
    public function generate($name = null)
    {
        if ($name !== null) {
            $this->name = $name;
            $this->initials = $this->generateInitials();
        }

return (string) $this;
    }

/**
     * Will return the generated initials.
     *
     * @return string
     */
    public function getInitials()
    {
        return $this->initials;
    }

/**
     * Will return the generated initials,
     * without special characters.
     *
     * @return string
     */
    public function getUrlfriendlyInitials()
    {
        $urlFriendlyInitials = $this->convertToUrlFriendlyString($this->getInitials());

$urlFriendlyInitials = mb_substr($urlFriendlyInitials, 0, $this->length);

return $urlFriendlyInitials;
    }

/**
     * Return the initials.
     *
     * @return string
     */
    public function __toString()
    {
        return $this->getInitials();
    }

/**
     * Generate a two-letter initial from a name,
     * and if no name, assume its already initials.
     * For safety, we limit it to two characters,
     * in case its a single, but long, name.
     *
     * @return string
     */
    protected function generateInitials()
    {
	    $nameOrInitials = trim($this->name);

if( !$this->keepCase ) {
		    $nameOrInitials = mb_strtoupper($nameOrInitials);
	    }

if( !$this->allowSpecialCharacters ) {
    		$nameOrInitials = preg_replace('/[!@#$%^&*(),.?":{}|<>_]/', '', $nameOrInitials);
	    }

$nameOrInitials = trim( trim( $nameOrInitials, '-' ) );

$names = explode(' ', $nameOrInitials);

// Get names with dash (-) between into separate names
	    $names = array_map( static function ($namePart) { return explode('-', $namePart); }, $names );
	    $realNames = [];

foreach( new \RecursiveIteratorIterator( new \RecursiveArrayIterator($names) ) as $namePart ) {
		    $realNames[] = $namePart;
	    }

$names = $realNames;

$initials = $nameOrInitials;
        $assignedNames = 0;

if (count($names) > 1) {
            $initials = '';
            $start = 0;

for ($i = 0; $i < $this->length; $i++) {
                $index = $i;

if (($index === ($this->length - 1) && $index > 0) || ($index > (count($names) - 1))) {
                    $index = count($names) - 1;
                }

if ($assignedNames >= count($names)) {
                    $start++;
                }

$initials .= mb_substr($names[$index], $start, 1);
                $assignedNames++;
            }
        }

$initials = mb_substr($initials, 0, $this->length);

return $initials;
    }

/**
     * Converts specialcharacters to url-friendly characters.
     *
     * Copied from: https://github.com/laravel/framework/blob/5.4/src/Illuminate/Support/Str.php#L56
     *
     * @param $string
     *
     * @return string
     */
    protected function convertToUrlFriendlyString($string)
    {
        foreach (static::charsArray() as $key => $val) {
            $string = str_replace($val, mb_substr($key, 0, 1), $string);
        }

return preg_replace('/[^\x20-\x7E]/u', '', $string);
    }

/**
     * Returns the replacements for the ascii method.
     *
     * Note: Adapted from Stringy\Stringy.
     *
     * @see https://github.com/danielstjules/Stringy/blob/2.3.1/LICENSE.txt
     *
     * @return array
     */
    protected static function charsArray()
    {
        static $charsArray;

if (isset($charsArray)) {
            return $charsArray;
        }

return $charsArray = [
            '0'    => ['°', '₀', '۰'],
            '1'    => ['¹', '₁', '۱'],
            '2'    => ['²', '₂', '۲'],
            '3'    => ['³', '₃', '۳'],
            '4'    => ['⁴', '₄', '۴', '٤'],
            '5'    => ['⁵', '₅', '۵', '٥'],
            '6'    => ['⁶', '₆', '۶', '٦'],
            '7'    => ['⁷', '₇', '۷'],
            '8'    => ['⁸', '₈', '۸'],
            '9'    => ['⁹', '₉', '۹'],
            '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',
            ],
            'b'    => ['б', 'β', 'Ъ', 'Ь', 'ب', 'ဗ', 'ბ'],
            'c'    => ['ç', 'ć', 'č', 'ĉ', 'ċ'],
            'd'    => ['ď', 'ð', 'đ', 'ƌ', 'ȡ', 'ɖ', 'ɗ', 'ᵭ', 'ᶁ', 'ᶑ', 'д', 'δ', 'د', 'ض', 'ဍ', 'ဒ', 'დ'],
            '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',
            ],
            'f'    => ['ф', 'φ', 'ف', 'ƒ', 'ფ'],
            'g'    => ['ĝ', 'ğ', 'ġ', 'ģ', 'г', 'ґ', 'γ', 'ဂ', 'გ', 'گ'],
            'h'    => ['ĥ', 'ħ', 'η', 'ή', 'ح', 'ه', 'ဟ', 'ှ', 'ჰ'],
            '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',
            ],
            'j'    => ['ĵ', 'ј', 'Ј', 'ჯ', 'ج'],
            'k'    => ['ķ', 'ĸ', 'к', 'κ', 'Ķ', 'ق', 'ك', 'က', 'კ', 'ქ', 'ک'],
            'l'    => ['ł', 'ľ', 'ĺ', 'ļ', 'ŀ', 'л', 'λ', 'ل', 'လ', 'ლ'],
            'm'    => ['м', 'μ', 'م', 'မ', 'მ'],
            'n'    => ['ñ', 'ń', 'ň', 'ņ', 'ŉ', 'ŋ', 'ν', 'н', 'ن', 'န', 'ნ'],
            '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',
            ],
            'p'    => ['п', 'π', 'ပ', 'პ', 'پ'],
            'q'    => ['ყ'],
            'r'    => ['ŕ', 'ř', 'ŗ', 'р', 'ρ', 'ر', 'რ'],
            's'    => ['ś', 'š', 'ş', 'с', 'σ', 'ș', 'ς', 'س', 'ص', 'စ', 'ſ', 'ს'],
            't'    => ['ť', 'ţ', 'т', 'τ', 'ț', 'ت', 'ط', 'ဋ', 'တ', 'ŧ', 'თ', 'ტ'],
            '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'],
            'v'    => ['в', 'ვ', 'ϐ'],
            'w'    => ['ŵ', 'ω', 'ώ', 'ဝ', 'ွ'],
            'x'    => ['χ', 'ξ'],
            'y'    => ['ý', 'ỳ', 'ỷ', 'ỹ', 'ỵ', 'ÿ', 'ŷ', 'й', 'ы', 'υ', 'ϋ', 'ύ', 'ΰ', 'ي', 'ယ'],
            'z'    => ['ź', 'ž', 'ż', 'з', 'ζ', 'ز', 'ဇ', 'ზ'],
            'aa'   => ['ع', 'आ', 'آ'],
            'ae'   => ['ä', 'æ', 'ǽ'],
            'ai'   => ['ऐ'],
            'at'   => ['@'],
            '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',
            ],
            'B'    => ['Б', 'Β', 'ब'],
            'C'    => ['Ç', 'Ć', 'Č', 'Ĉ', 'Ċ'],
            'D'    => ['Ď', 'Ð', 'Đ', 'Ɖ', 'Ɗ', 'Ƌ', 'ᴅ', 'ᴆ', 'Д', 'Δ'],
            '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',
            ],
            'F'    => ['Ф', 'Φ'],
            'G'    => ['Ğ', 'Ġ', 'Ģ', 'Г', 'Ґ', 'Γ'],
            'H'    => ['Η', 'Ή', 'Ħ'],
            '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'],
            'K'    => ['К', 'Κ'],
            'L'    => ['Ĺ', 'Ł', 'Л', 'Λ', 'Ļ', 'Ľ', 'Ŀ', 'ल'],
            'M'    => ['М', 'Μ'],
            'N'    => ['Ń', 'Ñ', 'Ň', 'Ņ', 'Ŋ', 'Н', 'Ν'],
            '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',
            ],
            'P'    => ['П', 'Π'],
            'R'    => ['Ř', 'Ŕ', 'Р', 'Ρ', 'Ŗ'],
            'S'    => ['Ş', 'Ŝ', 'Ș', 'Š', 'Ś', 'С', 'Σ'],
            'T'    => ['Ť', 'Ţ', 'Ŧ', 'Ț', 'Т', 'Τ'],
            'U'    => ['Ú', 'Ù', 'Ủ', 'Ũ', 'Ụ', 'Ư', 'Ứ', 'Ừ', 'Ử', 'Ữ', 'Ự', 'Û', 'Ū', 'Ů', 'Ű', 'Ŭ', 'Ų', 'У', 'Ǔ', 'Ǖ', 'Ǘ', 'Ǚ', 'Ǜ'],
            'V'    => ['В'],
            'W'    => ['Ω', 'Ώ', 'Ŵ'],
            'X'    => ['Χ', 'Ξ'],
            'Y'    => ['Ý', 'Ỳ', 'Ỷ', 'Ỹ', 'Ỵ', 'Ÿ', 'Ῠ', 'Ῡ', 'Ὺ', 'Ύ', 'Ы', 'Й', 'Υ', 'Ϋ', 'Ŷ'],
            'Z'    => ['Ź', 'Ž', 'Ż', 'З', 'Ζ'],
            'AE'   => ['Ä', 'Æ', 'Ǽ'],
            'CH'   => ['Ч'],
            'DJ'   => ['Ђ'],
            'DZ'   => ['Џ'],
            'GX'   => ['Ĝ'],
            'HX'   => ['Ĥ'],
            'IJ'   => ['Ĳ'],
            'JX'   => ['Ĵ'],
            'KH'   => ['Х'],
            'LJ'   => ['Љ'],
            'NJ'   => ['Њ'],
            'OE'   => ['Ö', 'Œ'],
            'PS'   => ['Ψ'],
            'SH'   => ['Ш'],
            'SHCH' => ['Щ'],
            'SS'   => ['ẞ'],
            'TH'   => ['Þ'],
            'TS'   => ['Ц'],
            'UE'   => ['Ü'],
            '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",
            ],
        ];
    }
}

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