在php中生成随机的唯一代码，并创建一个表并将其存储在Mysql中的表中

Question

我需要帮助来在php中生成一个随机的唯一代码，并创建一个表并将其存储在Mysql中的表中，然后将此随机数提供给想要注册的任何人，之后将为使用该随机生成的数字的人成功注册并对于那些不使用随机数的人来说是不成功的

Answer 1

If you're using PHP 7, it's easy to generate a random string:

$bytes = random_bytes(5); //random. Increase input for more bytes
$code = bin2hex($bytes); // eg: 385e33f741

Before PHP 7, I would generate an alphanumeric code with a function

function getRandomString($length){
    $chars = 'abcdefghijklmnopqrstuvwxyz0123456789';    
    $result = '';
    while(strlen($result)<$length):
        $result .= $chars{mt_rand(0,strlen($chars)-1)};
    endwhile;
    return $result;
}

To get a 10-character random code, you just call:

$code = getRandomString(10);

You can add more characters to $chars , such as capital letters and punctuations if you want those in the generated code

Answer 2

this function should do the trick

function random_Id($length = 6) {
        $id = substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"), 0, $length);
return $id;
    }