使输入的代码安全
@param $string
@return string
323378
public static function escape($string)
    {
        if (is_numeric($string))
        {
            return $string;
        }
        //HTML转义
        $string = htmlspecialchars($string, ENT_QUOTES, \Swoole::$charset);
        //启用了magic_quotes
        if (!get_magic_quotes_gpc())
        {
            $string = addslashes($string);
        }
        return $string;
    }
334968
public function translate($string)
    {
        $args = func_get_args();
        $translated = array_shift($args);
        $extraParams = $args;
        if (count($extraParams)>0)
        {
            $translated = vsprintf($translated, $extraParams);
        }

        return $translated;
    }
1065860
public static function textScript($string): string
    {
        $string = strip_tags($string); // otherwise HTML tags show up as latin
        $string = html_entity_decode($string, ENT_QUOTES, 'UTF-8'); // otherwise HTML entities show up as latin
        $string = str_replace([
            '@N.N.',
            '@P.N.',
        ], '', $string); // otherwise unknown names show up as latin
        $pos    = 0;
        $strlen = strlen($string);
        while ($pos < $strlen) {
            // get the Unicode Code Point for the character at position $pos
            $byte1 = ord($string[$pos]);
            if ($byte1 < 0x80) {
                $code_point = $byte1;
                $chrlen     = 1;
            } elseif ($byte1 < 0xC0) {
                // Invalid continuation character
                return 'Latn';
            } elseif ($byte1 < 0xE0) {
                $code_point = (($byte1 & 0x1F) << 6) + (ord($string[$pos + 1]) & 0x3F);
                $chrlen     = 2;
            } elseif ($byte1 < 0xF0) {
                $code_point = (($byte1 & 0x0F) << 12) + ((ord($string[$pos + 1]) & 0x3F) << 6) + (ord($string[$pos + 2]) & 0x3F);
                $chrlen     = 3;
            } elseif ($byte1 < 0xF8) {
                $code_point = (($byte1 & 0x07) << 24) + ((ord($string[$pos + 1]) & 0x3F) << 12) + ((ord($string[$pos + 2]) & 0x3F) << 6) + (ord($string[$pos + 3]) & 0x3F);
                $chrlen     = 3;
            } else {
                // Invalid UTF
                return 'Latn';
            }

            foreach (self::SCRIPT_CHARACTER_RANGES as $range) {
                if ($code_point >= $range[1] && $code_point <= $range[2]) {
                    return $range[0];
                }
            }
            // Not a recognised script. Maybe punctuation, spacing, etc. Keep looking.
            $pos += $chrlen;
        }

        return 'Latn';
    }
371873
private function getTranslatedString($string)
    {
        $languageId = Registry::getLang()->getBaseLanguage();

        return Registry::getLang()->translateString(
            $string,
            $languageId,
            false
        );
    }
796100
private function convertToWindowsCharset($string)
    {
        $charset = mb_detect_encoding(
            $string,
            "UTF-8, ISO-8859-1, ISO-8859-15",
            true
        );

        $string = mb_convert_encoding($string, "Windows-1252", $charset);
        return $string;
    }
641092
protected function normalizeString($string)
    {
        if (false === strpos($string, '_')) {
            return $string;
        }

        return preg_replace_callback('/_([a-zA-Z0-9])/', function ($matches) {
            return strtoupper($matches[1]);
        }, $string);
    }
127481
public static function makeValidUrl($string)
    {
        $protocols = ['http://', 'https://', 'ftp://'];

        if ($string != '') {
            foreach ($protocols as $p) {
                if (substr($string, 0, strlen($p)) == $p) {
                    return $string;
                }
            }
        }

        if ($string != '' && $string != 'http://') {
            $string = 'http://' . $string;
        }

        return $string;
    }
182405
public function friendlyUrl($string)
    {
        /**
         * @var Helper $helper
         */
        $helper = $this->helper;

        $string = preg_replace('~[\s\t\n\r]+~', '-', $string);

        $string = $helper->str()->low($string);
        $string = $helper->str()->translit($string);

        return trim(preg_replace('~[^a-z0-9-]+~', '', $string), '-');
    }
963285
public static function hardDecode($string) {
		$data = htmlspecialchars_decode($string);
		$data = html_entity_decode($data);
		$data = strip_tags($data);
		$data = chop(Utility::convert_smart_quotes($data));
		$data = str_replace(array("\r", "\n", "	"), "", $data);

		return ($data);
	}
740421
public static function stringURLUnicodeSlug($string)
    {
        // Replace double byte whitespaces by single byte (East Asian languages)
        $str = preg_replace('/\xE3\x80\x80/', ' ', $string);

        // Remove any '-' from the string as they will be used as concatenator.
        // Would be great to let the spaces in but only Firefox is friendly with this

        $str = str_replace('-', ' ', $str);

        // Replace forbidden characters by whitespaces
        $str = preg_replace('#[:\#\*"@+=;!><&\.%()\]\/\'\\\\|\[]#', "\x20", $str);

        // Delete all '?'
        $str = str_replace('?', '', $str);

        // Trim white spaces at beginning and end of alias and make lowercase
        $str = trim(UnicodeHelper::strtolower($str));

        // Remove any duplicate whitespace and replace whitespaces by hyphens
        $str = preg_replace('#\x20+#', '-', $str);

        return $str;
    }
1100946
public static function encode(String $string) : String
    {
        $secBadChars = Properties::$injectionBadChars;

        if( ! empty($secBadChars) )
        {
            foreach( $secBadChars as $badChar => $changeChar )
            {
                if( is_numeric($badChar) )
                {
                    $badChar = $changeChar;
                    $changeChar = '';
                }

                $badChar = trim($badChar, '/');
                $string  = preg_replace('/'.$badChar.'/xi', $changeChar, $string);
            }
        }

        return addslashes(trim($string));
    }
430372
protected function normalizeString($string)
    {
        if (false === strpos($string, '_')) {
            return $string;
        }

        $offset = strspn($string, '_');
        if ($offset) {
            $underscorePrefix = substr($string, 0, $offset);
            $string = substr($string, $offset);
        } else {
            $underscorePrefix = '';
        }

        return $underscorePrefix.parent::normalizeString($string);
    }
666760
public function filterSlug(string $string): string
    {
        return mb_strtolower(trim((string) preg_replace('~[^0-9a-z]+~i', '-', html_entity_decode((string) preg_replace('~&([a-z]{1,2})(?:acute|cedil|circ|grave|lig|orn|ring|slash|th|tilde|uml);~i', '$1', htmlentities($string, ENT_QUOTES, 'UTF-8')), ENT_QUOTES, 'UTF-8')), '-'));
    }
832360
public static function romanize($string)
    {
        foreach (self::$chars as $regex => $replacement) {
            // u enables Unicode
            $string = preg_replace($regex . 'u', $replacement, $string);
        }

        return $string;
    }
1191685
public static function unaccent($string)
    {
        if (!preg_match('/[\x80-\xff]/', $string)) {
            return $string;
        }

        if (self::seemsUtf8($string)) {
            $chars = array(
                // Decompositions for Latin-1 Supplement
                chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
                chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
                chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
                chr(195).chr(135) => 'C', chr(195).chr(136) => 'E',
                chr(195).chr(137) => 'E', chr(195).chr(138) => 'E',
                chr(195).chr(139) => 'E', chr(195).chr(140) => 'I',
                chr(195).chr(141) => 'I', chr(195).chr(142) => 'I',
                chr(195).chr(143) => 'I', chr(195).chr(145) => 'N',
                chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
                chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
                chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
                chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
                chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
                chr(195).chr(159) => 's', chr(195).chr(160) => 'a',
                chr(195).chr(161) => 'a', chr(195).chr(162) => 'a',
                chr(195).chr(163) => 'a', chr(195).chr(164) => 'a',
                chr(195).chr(165) => 'a', chr(195).chr(167) => 'c',
                chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
                chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
                chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
                chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
                chr(195).chr(177) => 'n', chr(195).chr(178) => 'o',
                chr(195).chr(179) => 'o', chr(195).chr(180) => 'o',
                chr(195).chr(181) => 'o', chr(195).chr(182) => 'o',
                chr(195).chr(182) => 'o', chr(195).chr(185) => 'u',
                chr(195).chr(186) => 'u', chr(195).chr(187) => 'u',
                chr(195).chr(188) => 'u', chr(195).chr(189) => 'y',
                chr(195).chr(191) => 'y',
                // Decompositions for Latin Extended-A
                chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
                chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',
                chr(196).chr(132) => 'A', chr(196).chr(133) => 'a',
                chr(196).chr(134) => 'C', chr(196).chr(135) => 'c',
                chr(196).chr(136) => 'C', chr(196).chr(137) => 'c',
                chr(196).chr(138) => 'C', chr(196).chr(139) => 'c',
                chr(196).chr(140) => 'C', chr(196).chr(141) => 'c',
                chr(196).chr(142) => 'D', chr(196).chr(143) => 'd',
                chr(196).chr(144) => 'D', chr(196).chr(145) => 'd',
                chr(196).chr(146) => 'E', chr(196).chr(147) => 'e',
                chr(196).chr(148) => 'E', chr(196).chr(149) => 'e',
                chr(196).chr(150) => 'E', chr(196).chr(151) => 'e',
                chr(196).chr(152) => 'E', chr(196).chr(153) => 'e',
                chr(196).chr(154) => 'E', chr(196).chr(155) => 'e',
                chr(196).chr(156) => 'G', chr(196).chr(157) => 'g',
                chr(196).chr(158) => 'G', chr(196).chr(159) => 'g',
                chr(196).chr(160) => 'G', chr(196).chr(161) => 'g',
                chr(196).chr(162) => 'G', chr(196).chr(163) => 'g',
                chr(196).chr(164) => 'H', chr(196).chr(165) => 'h',
                chr(196).chr(166) => 'H', chr(196).chr(167) => 'h',
                chr(196).chr(168) => 'I', chr(196).chr(169) => 'i',
                chr(196).chr(170) => 'I', chr(196).chr(171) => 'i',
                chr(196).chr(172) => 'I', chr(196).chr(173) => 'i',
                chr(196).chr(174) => 'I', chr(196).chr(175) => 'i',
                chr(196).chr(176) => 'I', chr(196).chr(177) => 'i',
                chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij',
                chr(196).chr(180) => 'J', chr(196).chr(181) => 'j',
                chr(196).chr(182) => 'K', chr(196).chr(183) => 'k',
                chr(196).chr(184) => 'k', chr(196).chr(185) => 'L',
                chr(196).chr(186) => 'l', chr(196).chr(187) => 'L',
                chr(196).chr(188) => 'l', chr(196).chr(189) => 'L',
                chr(196).chr(190) => 'l', chr(196).chr(191) => 'L',
                chr(197).chr(128) => 'l', chr(197).chr(129) => 'L',
                chr(197).chr(130) => 'l', chr(197).chr(131) => 'N',
                chr(197).chr(132) => 'n', chr(197).chr(133) => 'N',
                chr(197).chr(134) => 'n', chr(197).chr(135) => 'N',
                chr(197).chr(136) => 'n', chr(197).chr(137) => 'N',
                chr(197).chr(138) => 'n', chr(197).chr(139) => 'N',
                chr(197).chr(140) => 'O', chr(197).chr(141) => 'o',
                chr(197).chr(142) => 'O', chr(197).chr(143) => 'o',
                chr(197).chr(144) => 'O', chr(197).chr(145) => 'o',
                chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe',
                chr(197).chr(148) => 'R', chr(197).chr(149) => 'r',
                chr(197).chr(150) => 'R', chr(197).chr(151) => 'r',
                chr(197).chr(152) => 'R', chr(197).chr(153) => 'r',
                chr(197).chr(154) => 'S', chr(197).chr(155) => 's',
                chr(197).chr(156) => 'S', chr(197).chr(157) => 's',
                chr(197).chr(158) => 'S', chr(197).chr(159) => 's',
                chr(197).chr(160) => 'S', chr(197).chr(161) => 's',
                chr(197).chr(162) => 'T', chr(197).chr(163) => 't',
                chr(197).chr(164) => 'T', chr(197).chr(165) => 't',
                chr(197).chr(166) => 'T', chr(197).chr(167) => 't',
                chr(197).chr(168) => 'U', chr(197).chr(169) => 'u',
                chr(197).chr(170) => 'U', chr(197).chr(171) => 'u',
                chr(197).chr(172) => 'U', chr(197).chr(173) => 'u',
                chr(197).chr(174) => 'U', chr(197).chr(175) => 'u',
                chr(197).chr(176) => 'U', chr(197).chr(177) => 'u',
                chr(197).chr(178) => 'U', chr(197).chr(179) => 'u',
                chr(197).chr(180) => 'W', chr(197).chr(181) => 'w',
                chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y',
                chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z',
                chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
                chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
                chr(197).chr(190) => 'z', chr(197).chr(191) => 's',
                // Euro Sign
                chr(226).chr(130).chr(172) => 'E',
                // GBP (Pound) Sign
                chr(194).chr(163) => '',
                'Ä' => 'Ae', 'ä' => 'ae', 'Ü' => 'Ue', 'ü' => 'ue',
                'Ö' => 'Oe', 'ö' => 'oe', 'ß' => 'ss',
                // Norwegian characters
                'Å'=>'Aa','Æ'=>'Ae','Ø'=>'O','æ'=>'a','ø'=>'o','å'=>'aa'
            );

            $string = strtr($string, $chars);
        } else {
            // Assume ISO-8859-1 if not UTF-8
            $chars['in'] = chr(128).chr(131).chr(138).chr(142).chr(154).chr(158)
                .chr(159).chr(162).chr(165).chr(181).chr(192).chr(193).chr(194)
                .chr(195).chr(196).chr(197).chr(199).chr(200).chr(201).chr(202)
                .chr(203).chr(204).chr(205).chr(206).chr(207).chr(209).chr(210)
                .chr(211).chr(212).chr(213).chr(214).chr(216).chr(217).chr(218)
                .chr(219).chr(220).chr(221).chr(224).chr(225).chr(226).chr(227)
                .chr(228).chr(229).chr(231).chr(232).chr(233).chr(234).chr(235)
                .chr(236).chr(237).chr(238).chr(239).chr(241).chr(242).chr(243)
                .chr(244).chr(245).chr(246).chr(248).chr(249).chr(250).chr(251)
                .chr(252).chr(253).chr(255);

            $chars['out'] = "EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy";

            $string = strtr($string, $chars['in'], $chars['out']);
            $doubleChars['in'] = array(chr(140), chr(156), chr(198), chr(208), chr(222), chr(223), chr(230), chr(240), chr(254));
            $doubleChars['out'] = array('OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th');
            $string = str_replace($doubleChars['in'], $doubleChars['out'], $string);
        }

        return $string;
    }
337455
protected function compliment($string) {
        $result = '';
        $len    = strlen($string);
        for ($i = 0; $i < $len; $i++) {
            $result .= chr(255 - ord($string[$i]));
        }
        return $result;
    }
1129304
protected function decode($string)
    {
        $string = base64_decode($string, true);
        if ($string === false) {
            return [];
        }

        if ($this->getConfig('encrypt')) {      // 解密
            $string = $this->decrypt($string);
        } elseif ($this->getConfig('zip')) {    // 解压
            $string = (substr($string, 0, 1) == '_')
                    ? gzuncompress(substr($string, 1))
                    : $string;
        }

        // sha1 raw binary length is 20
        $hash_length = 20;

        // 数字签名校验
        do {
            if (!$string || strlen($string) <= $hash_length) {
                break;
            }

            $hash = substr($string, $hash_length * -1);
            $string = substr($string, 0, strlen($string) - $hash_length);

            if ($this->getSign($string) !== $hash) {
                break;
            }

            try {
                return \Owl\safe_json_decode($string, true) ?: [];
            } catch (\Exception $exception) {
                if (DEBUG) {
                    throw $exception;
                }

                \Owl\Logger::log('error', 'cookie context json decode failed', [
                    'message' => $exception->getMessage(),
                    'code' => $exception->getCode(),
                ]);
            }
        } while (false);

        return [];
    }