Php 生成随机字符串函数集成

通过 uniqid() 获取随机字符串

if (! function_exists('uniqid_nonce_str')) {
    /**
     * 通过 uniqid() 获取随机字符串
     *
     * @param int $sizeType  1 13位  2 32位 default ''
     * @return string
     */
    function uniqid_nonce_str(int $sizeType = 1) : string
    {
        if ($sizeType == 1) {
            return uniqid();
        } elseif ($sizeType == 2) {
            return md5(uniqid(microtime(true), true));
        } else {
            return '';
        }
    }
}

通过 str_shuffle() 获取随机字符串

if (! function_exists('shuffle_char_nonce_str')) {
    /**
     * 通过 str_shuffle() 获取随机字符串
     *
     * @param int $length [default '']
     * @param string $extra
     * @return string
     */
    function shuffle_char_nonce_str(int $length = 32, string $extra = '') : string
    {
        $predefine = 'qwertyuioplkjhgfdsazxcvbnmQWERTYUIOPLKJHGFDSAZXCVBNM0147896325';

        if (0 < $length && $length <= strlen($predefine . $extra)) {
            return substr(str_shuffle($predefine . $extra), mt_rand(0, strlen($predefine . $extra) - $length), $length);
        } else {
            return '';
        }
    }
}

通过 shuffle() 处理预定义数组，获取随机字符串

if (! function_exists('shuffle_nonce_str')) {
    /**
     * 通过 shuffle() 处理预定义数组，获取随机字符串
     *
     * @param int $length [default '']
     * @param array $extra
     * @return string
     */
    function shuffle_nonce_str(int $length = 32, array $extra = []) : string
    {
        $predefine = [
            "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
            "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
            "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
            "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
            "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
            "3", "4", "5", "6", "7", "8", "9"
        ];

        $current = array_merge($predefine, $extra);
        $counter = count($current);
        shuffle($current);

        if (0 < $length && $length <= $counter) {
            return implode('', array_slice($current, mt_rand(0, $counter - $length), $length));
        } else {
            return '';
        }
    }
}

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