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<?php |
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namespace WebComplete\core\utils\helpers; |
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class StringHelper |
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{ |
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/** |
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* Encodes string into "Base 64 Encoding with URL and Filename Safe Alphabet" (RFC 4648) |
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* |
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* > Note: Base 64 padding `=` may be at the end of the returned string. |
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* > `=` is not transparent to URL encoding. |
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* |
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* @see https://tools.ietf.org/html/rfc4648#page-7 |
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* @param string $input the string to encode. |
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* @return string encoded string. |
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*/ |
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public function base64UrlEncode($input): string |
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{ |
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return \strtr(\base64_encode($input), '+/', '-_'); |
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} |
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/** |
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* Decodes "Base 64 Encoding with URL and Filename Safe Alphabet" (RFC 4648) |
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* |
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* @see https://tools.ietf.org/html/rfc4648#page-7 |
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* @param string $input encoded string. |
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* @return string decoded string. |
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*/ |
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public function base64UrlDecode($input): string |
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{ |
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return \base64_decode(\strtr($input, '-_', '+/')); |
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} |
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/** |
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* Returns the number of bytes in the given string. |
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* This method ensures the string is treated as a byte array by using `mb_strlen()`. |
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* @param string $string the string being measured for length |
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* @return int the number of bytes in the given string. |
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*/ |
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public function byteLength($string): int |
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{ |
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return \mb_strlen($string, '8bit'); |
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} |
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/** |
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* Returns the portion of string specified by the start and length parameters. |
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* This method ensures the string is treated as a byte array by using `mb_substr()`. |
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* @param string $string the input string. Must be one character or longer. |
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* @param int $start the starting position |
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* @param int $length the desired portion length. If not specified or `null`, there will be |
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* no limit on length i.e. the output will be until the end of the string. |
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* @return string the extracted part of string, or FALSE on failure or an empty string. |
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* @see http://www.php.net/manual/en/function.substr.php |
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*/ |
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public function byteSubstr($string, $start, $length = null): string |
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{ |
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return \mb_substr($string, $start, $length ?? \mb_strlen($string, '8bit'), '8bit'); |
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} |
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/** |
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* @param $string |
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* @return string |
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*/ |
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public function rus2translit($string): string |
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{ |
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$converter = [ |
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'а' => 'a', 'б' => 'b', 'в' => 'v', |
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'г' => 'g', 'д' => 'd', 'е' => 'e', |
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'ё' => 'e', 'ж' => 'zh', 'з' => 'z', |
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'и' => 'i', 'й' => 'y', 'к' => 'k', |
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'л' => 'l', 'м' => 'm', 'н' => 'n', |
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'о' => 'o', 'п' => 'p', 'р' => 'r', |
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'с' => 's', 'т' => 't', 'у' => 'u', |
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'ф' => 'f', 'х' => 'h', 'ц' => 'c', |
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'ч' => 'ch', 'ш' => 'sh', 'щ' => 'sch', |
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'ь' => '', 'ы' => 'y', 'ъ' => '', |
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'э' => 'e', 'ю' => 'yu', 'я' => 'ya', |
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'А' => 'A', 'Б' => 'B', 'В' => 'V', |
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'Г' => 'G', 'Д' => 'D', 'Е' => 'E', |
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'Ё' => 'E', 'Ж' => 'Zh', 'З' => 'Z', |
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'И' => 'I', 'Й' => 'Y', 'К' => 'K', |
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'Л' => 'L', 'М' => 'M', 'Н' => 'N', |
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'О' => 'O', 'П' => 'P', 'Р' => 'R', |
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'С' => 'S', 'Т' => 'T', 'У' => 'U', |
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'Ф' => 'F', 'Х' => 'H', 'Ц' => 'C', |
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'Ч' => 'Ch', 'Ш' => 'Sh', 'Щ' => 'Sch', |
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'Ь' => '', 'Ы' => 'Y', 'Ъ' => '', |
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'Э' => 'E', 'Ю' => 'Yu', 'Я' => 'Ya', |
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]; |
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return strtr($string, $converter); |
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} |
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/** |
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* @param $str |
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* @return string |
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*/ |
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public function str2url(string $str): string |
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{ |
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$str = $this->rus2translit($str); |
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$str = \strtolower($str); |
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$str = \preg_replace('~[^-a-z0-9]+~u', '-', $str); |
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$str = \trim($str, '-'); |
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return $str; |
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} |
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/** |
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* @param string $html |
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* @return string |
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*/ |
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public function html2text(string $html): string |
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{ |
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$html = \str_replace( |
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["\n", '<br>', '<br/>', '<br />', '</div>', '</p>', '</h1>', '</h2>', '</h3>'], |
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[' ', "\n", "\n", "\n", "</div>\n", "</p>\n", "</h1>\n", "</h2>\n", "</h3>\n"], |
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$html |
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); |
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return \htmlspecialchars(\trim(\strip_tags($html))); |
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} |
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} |
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web-complete /
core
