diff --git a/kiri-engine/Core/Str.php b/kiri-engine/Core/Str.php
index ed7c757d..9ec6b248 100644
--- a/kiri-engine/Core/Str.php
+++ b/kiri-engine/Core/Str.php
@@ -14,264 +14,270 @@ use Exception;
 class Str
 {
 
-	const STRING = 'abcdefghijklmnopqrstuvwxyz';
+    const STRING = 'abcdefghijklmnopqrstuvwxyz';
 
-	const NUMBER = '01234567890';
+    const NUMBER = '01234567890';
 
-	/**
-	 * @param int $length
-	 *
-	 * @return string
-	 * 获取随机字符串
-	 */
-	public static function rand(int $length = 20): string
-	{
-		$string = '';
-		if ($length < 1) $length = 20;
-		$default = self::STRING . strtoupper(self::STRING) . self::NUMBER;
-		$default = str_split($default);
-		$string .= str_repeat($default[array_rand($default)], $length);
-		return (string)$string;
-	}
+    /**
+     * @param int $length
+     *
+     * @return string
+     * 获取随机字符串
+     */
+    public static function rand(int $length = 20): string
+    {
+        $string = '';
+        if ($length < 1) $length = 20;
+        $default = self::STRING . strtoupper(self::STRING) . self::NUMBER;
+        $default = str_split($default);
+        for ($i = 0; $i < $length; $i++) {
+            shuffle($default);
+            $string .= $default[array_rand($default)];
+        }
+        return $string;
+    }
 
-	/**
-	 * @param int $length
-	 *
-	 * @return int|string 获取随机数字
-	 * 获取随机数字
-	 */
-	public static function random(int $length = 20): int|string
-	{
-		$number = '';
-		$default = str_split(self::NUMBER);
-		if ($length < 1) $length = 1;
-		$number .= str_repeat($default[array_rand($default)], $length);
-		return $number;
-	}
+    /**
+     * @param int $length
+     *
+     * @return int|string 获取随机数字
+     * 获取随机数字
+     */
+    public static function random(int $length = 20): int|string
+    {
+        $number = '';
+        $default = str_split(self::NUMBER);
+        if ($length < 1) $length = 1;
+        for ($i = 0; $i < $length; $i++) {
+            shuffle($default);
+            $number .= $default[array_rand($default)];
+        }
+        return $number;
+    }
 
-	/**
-	 * @param        $string
-	 * @param        $sullen
-	 * @param bool $strip_tags
-	 * @param string $append
-	 *
-	 * @return string
-	 */
-	public static function cut_str_utf8($string, $sullen, bool $strip_tags = true, string $append = '...'): string
-	{
-		if ($strip_tags) {
-			$string = strip_tags($string);
-		}//去掉签标
-		$pa = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/";
-		preg_match_all($pa, $string, $t_string);
-		$str = "";
-		for ($i = 0; $i < count($t_string[0]); $i++) {
-			$str .= $t_string[0][$i];
-			//转为gbk，一个汉字长度为2
-			if (strlen(@iconv('utf-8', 'gbk', $str)) >= $sullen) {
-				if ($i != count($t_string[0]) - 1) $str .= $append;
-				break;
-			}
-		}
-		return $str;
-	}
+    /**
+     * @param        $string
+     * @param        $sullen
+     * @param bool $strip_tags
+     * @param string $append
+     *
+     * @return string
+     */
+    public static function cut_str_utf8($string, $sullen, bool $strip_tags = TRUE, string $append = '...'): string
+    {
+        if ($strip_tags) {
+            $string = strip_tags($string);
+        }//去掉签标
+        $pa = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/";
+        preg_match_all($pa, $string, $t_string);
+        $str = "";
+        for ($i = 0; $i < count($t_string[0]); $i++) {
+            $str .= $t_string[0][$i];
+            //转为gbk，一个汉字长度为2
+            if (strlen(@iconv('utf-8', 'gbk', $str)) >= $sullen) {
+                if ($i != count($t_string[0]) - 1) $str .= $append;
+                break;
+            }
+        }
+        return $str;
+    }
 
-	/**
-	 * @param $data
-	 *
-	 * @param null $callback
-	 * @return bool
-	 * 判断是否为json字符串
-	 */
-	public static function isJson($data, $callback = null): bool
-	{
-		$json = !is_null(json_decode($data)) && !is_numeric($data);
-		if ($json && is_callable($callback, true)) {
-			return call_user_func($callback, $data);
-		}
-		return $json;
-	}
+    /**
+     * @param $data
+     *
+     * @param null $callback
+     * @return bool
+     * 判断是否为json字符串
+     */
+    public static function isJson($data, $callback = NULL): bool
+    {
+        $json = !is_null(json_decode($data)) && !is_numeric($data);
+        if ($json && is_callable($callback, TRUE)) {
+            return call_user_func($callback, $data);
+        }
+        return $json;
+    }
 
-	/**
-	 * @param $data
-	 *
-	 * @param null $callBack
-	 * @return bool
-	 * 判断是否序列化字符串
-	 */
-	public static function isSerialize($data, $callBack = null): bool
-	{
-		$false = !empty($data) && swoole_unserialize($data) !== false;
-		if ($false && is_callable($callBack, true)) {
-			return call_user_func($callBack, $data);
-		}
-		return $false;
-	}
+    /**
+     * @param $data
+     *
+     * @param null $callBack
+     * @return bool
+     * 判断是否序列化字符串
+     */
+    public static function isSerialize($data, $callBack = NULL): bool
+    {
+        $false = !empty($data) && swoole_unserialize($data) !== FALSE;
+        if ($false && is_callable($callBack, TRUE)) {
+            return call_user_func($callBack, $data);
+        }
+        return $false;
+    }
 
-	/**
-	 * @param     $string
-	 * @param int $length
-	 *
-	 * @param string $append
-	 * @return string
-	 */
-	public static function cut($string, int $length = 20, string $append = '...'): string
-	{
-		if (empty($string)) {
-			return '';
-		}
-		if ($length < 1) {
-			$length = 1;
-		}
-		$array = str_split($string);
-		if (count($array) <= $length) {
-			return implode('', $array);
-		}
-		$string = implode('', array_slice($array, 0, $length));
-		if (!empty($append)) {
-			$string .= $append;
-		}
-		return $string;
-	}
+    /**
+     * @param     $string
+     * @param int $length
+     *
+     * @param string $append
+     * @return string
+     */
+    public static function cut($string, int $length = 20, string $append = '...'): string
+    {
+        if (empty($string)) {
+            return '';
+        }
+        if ($length < 1) {
+            $length = 1;
+        }
+        $array = str_split($string);
+        if (count($array) <= $length) {
+            return implode('', $array);
+        }
+        $string = implode('', array_slice($array, 0, $length));
+        if (!empty($append)) {
+            $string .= $append;
+        }
+        return $string;
+    }
 
-	/**
-	 * @param        $str
-	 * @param int $number
-	 * @param string $key
-	 *
-	 * @return string
-	 */
-	public static function encrypt($str, int $number = 10, string $key = 'xshucai.com'): string
-	{
-		$res = [];
-		$add = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
-		$len = strlen($key) < 0 ? 1 : (strlen($key) + 5 > strlen($add) ? strlen($add) - 5 : strlen($key));
-		if ($number < 1) $number = 10;
-		$array = str_split($str);
-		asort($array);
-		$str = implode('', $array);
-		for ($i = 0; $i < $number; $i++) {
-			$_tmp = md5($key) . md5($str) . mb_substr($add, $len, $len + 5, 'utf-8');
-			$res[] = md5($_tmp);
-		}
-		sort($res, SORT_STRING);
-		return hash('sha384', implode('', $res));
-	}
+    /**
+     * @param        $str
+     * @param int $number
+     * @param string $key
+     *
+     * @return string
+     */
+    public static function encrypt($str, int $number = 10, string $key = 'xshucai.com'): string
+    {
+        $res = [];
+        $add = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+        $len = strlen($key) < 0 ? 1 : (strlen($key) + 5 > strlen($add) ? strlen($add) - 5 : strlen($key));
+        if ($number < 1) $number = 10;
+        $array = str_split($str);
+        asort($array);
+        $str = implode('', $array);
+        for ($i = 0; $i < $number; $i++) {
+            $_tmp = md5($key) . md5($str) . mb_substr($add, $len, $len + 5, 'utf-8');
+            $res[] = md5($_tmp);
+        }
+        sort($res, SORT_STRING);
+        return hash('sha384', implode('', $res));
+    }
 
-	/**
-	 * @param $file
-	 * @param $type
-	 * @return string
-	 */
-	public static function filename($file, $type): string
-	{
-		switch ($type) {
-			case 'image/png':
-				return md5_file($file) . '.png';
-			case 'image/jpeg':
-			case 'image/jpg':
-				return md5_file($file) . '.jpg';
-			case 'image/gif':
-				return md5_file($file) . '.gif';
-				break;
-		}
-		return md5_file($file);
-	}
+    /**
+     * @param $file
+     * @param $type
+     * @return string
+     */
+    public static function filename($file, $type): string
+    {
+        switch ($type) {
+            case 'image/png':
+                return md5_file($file) . '.png';
+            case 'image/jpeg':
+            case 'image/jpg':
+                return md5_file($file) . '.jpg';
+            case 'image/gif':
+                return md5_file($file) . '.gif';
+                break;
+        }
+        return md5_file($file);
+    }
 
-	/**
-	 * @param $endTime
-	 * @param int|null $startTime
-	 * @return array
-	 * 剩余天，带分秒
-	 */
-	public static function timeout($endTime, int $startTime = null): array
-	{
-		$endTime = $endTime - (!empty($startTime) ? $startTime : time());
+    /**
+     * @param $endTime
+     * @param int|null $startTime
+     * @return array
+     * 剩余天，带分秒
+     */
+    public static function timeout($endTime, int $startTime = NULL): array
+    {
+        $endTime = $endTime - (!empty($startTime) ? $startTime : time());
 
-		$day = intval($endTime / (3600 * 24));
+        $day = intval($endTime / (3600 * 24));
 
-		$hours = intval(($endTime - ($day * (3600 * 24))) / 3600);
+        $hours = intval(($endTime - ($day * (3600 * 24))) / 3600);
 
-		$minute = intval(($endTime - ($day * (3600 * 24) + $hours * 3600)) / 60);
+        $minute = intval(($endTime - ($day * (3600 * 24) + $hours * 3600)) / 60);
 
-		$scrod = intval(($endTime - ($day * (3600 * 24) + $hours * 3600 + $minute * 60)));
+        $scrod = intval(($endTime - ($day * (3600 * 24) + $hours * 3600 + $minute * 60)));
 
-		return [$day, $hours, $minute, $scrod];
-	}
+        return [$day, $hours, $minute, $scrod];
+    }
 
 
-	/**
-	 * @return false|int
-	 */
-	public static function get_sy_time(): bool|int
-	{
-		$time = strtotime('+1days', strtotime(date('Y-m-d')));
+    /**
+     * @return false|int
+     */
+    public static function get_sy_time(): bool|int
+    {
+        $time = strtotime('+1days', strtotime(date('Y-m-d')));
 
-		return $time - time();
-	}
+        return $time - time();
+    }
 
-	/**
-	 * @param string $string
-	 * @return string
-	 */
-	public static function encode(string $string): string
-	{
-		return addslashes($string);
-	}
+    /**
+     * @param string $string
+     * @return string
+     */
+    public static function encode(string $string): string
+    {
+        return addslashes($string);
+    }
 
-	/**
-	 * @param string $string
-	 * @return string|string[]|null
-	 * 清除标点符号
-	 */
-	public static function clear(string $string): array|string|null
-	{
-		$char = '。、！？：；﹑•＂…‘’“”〝〞∕¦‖—　〈〉﹞﹝「」‹›〖〗】【»«』『〕〔》《﹐¸﹕︰﹔！¡？¿﹖﹌﹏﹋＇´ˊˋ―﹫︳︴¯＿￣﹢﹦﹤‐­˜﹟﹩﹠﹪﹡﹨﹍﹉﹎﹊ˇ︵︶︷︸︹︿﹀︺︽︾ˉ﹁﹂﹃﹄︻︼（）';
-		return preg_replace(array("/[[:punct:]]/i", '/[' . $char . ']/u', '/[ ]{2,}/'), '', $string);
-	}
+    /**
+     * @param string $string
+     * @return string|string[]|null
+     * 清除标点符号
+     */
+    public static function clear(string $string): array|string|null
+    {
+        $char = '。、！？：；﹑•＂…‘’“”〝〞∕¦‖—　〈〉﹞﹝「」‹›〖〗】【»«』『〕〔》《﹐¸﹕︰﹔！¡？¿﹖﹌﹏﹋＇´ˊˋ―﹫︳︴¯＿￣﹢﹦﹤‐­˜﹟﹩﹠﹪﹡﹨﹍﹉﹎﹊ˇ︵︶︷︸︹︿﹀︺︽︾ˉ﹁﹂﹃﹄︻︼（）';
+        return preg_replace(["/[[:punct:]]/i", '/[' . $char . ']/u', '/[ ]{2,}/'], '', $string);
+    }
 
 
-	/**
-	 * @param int $user
-	 * @param array $param
-	 * @param null $requestTime
-	 *
-	 * @return string
-	 * @throws Exception
-	 */
-	public static function token(int $user, array $param = [], $requestTime = NULL): string
-	{
-		$str = '';
-		if (!$requestTime) {
-			$requestTime = microtime(true);
-		}
-		$_user = str_split(md5($user . md5((string)$user)));
-		ksort($_user);
-		foreach ($_user as $key => $val) {
-			$str .= md5(sha1($key . $val . 'www.xshucai.com'));
-		}
-		if (is_array($param)) {
-			foreach ($param as $key => $val) {
-				$str .= md5($str . sha1($key . md5($val)));
-			}
-		}
-		$str .= sha1(base64_encode((string)$requestTime));
+    /**
+     * @param int $user
+     * @param array $param
+     * @param null $requestTime
+     *
+     * @return string
+     * @throws Exception
+     */
+    public static function token(int $user, array $param = [], $requestTime = NULL): string
+    {
+        $str = '';
+        if (!$requestTime) {
+            $requestTime = microtime(TRUE);
+        }
+        $_user = str_split(md5($user . md5((string)$user)));
+        ksort($_user);
+        foreach ($_user as $key => $val) {
+            $str .= md5(sha1($key . $val . 'www.xshucai.com'));
+        }
+        if (is_array($param)) {
+            foreach ($param as $key => $val) {
+                $str .= md5($str . sha1($key . md5($val)));
+            }
+        }
+        $str .= sha1(base64_encode((string)$requestTime));
 
-		$md5 = md5($str . $user);
+        $md5 = md5($str . $user);
 
-		return preg_replace('/(\w{10})(\w{3})(\w{4})(\w{9})(\w{6})/', '$1-$2-$3-$4-$5', $md5);
-	}
+        return preg_replace('/(\w{10})(\w{3})(\w{4})(\w{9})(\w{6})/', '$1-$2-$3-$4-$5', $md5);
+    }
 
 
-	/**
-	 * @param string $str
-	 * @param bool $unfairest
-	 * @return string
-	 */
-	public static function convertUnderline(string $str, bool $unfairest = true): string
-	{
-		$str = ucwords(str_replace('_', ' ', $str));
-		$str = str_replace(' ', '', lcfirst($str));
-		return $unfairest ? ucfirst($str) : $str;
-	}
+    /**
+     * @param string $str
+     * @param bool $unfairest
+     * @return string
+     */
+    public static function convertUnderline(string $str, bool $unfairest = TRUE): string
+    {
+        $str = ucwords(str_replace('_', ' ', $str));
+        $str = str_replace(' ', '', lcfirst($str));
+        return $unfairest ? ucfirst($str) : $str;
+    }
 }