how to generate unique id in php

Use the PHPuniqid function to generate a unique ID. The PHPuniqid function is used to generate a unique ID. it is common to use phpuniqid to generate a unique id, such as the temporary cache file name, temporary variables, temporary security code,

The use cases for generating unique IDs are very common, such as temporary cache file names, temporary variables, and temporary security codes. the uniqid () function is based on the current time in microseconds, generate a unique ID. Because the

By default, the generated unique ID returns a string of 13 characters. If the prefix of the unique ID is not defined, a maximum of 23 strings can be returned. If you combine the md5 () function, the generated unique ID is more reliable. This

How PHP generates a unique numeric ID, note that it is numeric, do not string the Reply content: How PHP generates a unique numeric ID, note that it is numeric, do not string the Landlord, you are a big problem. Twitter,weibo and so on have

Use the uniqid () function in php to generate a unique id. Function createId ($ prefix = "") {$ str = md5 (uniqid (mt_rand (), true); return $ prefix. $ str;} // uniqid (prefix, more_entropy) The uniqid () function generates a unique ID based on

PHP generated unique numeric id method summary, PHP generation ID Summary Regarding the question of generating a unique numeric ID, is it necessary to use Rand to generate a random number and then go to the database query for this number? It's a

functionCreateid ($prefix= ""){    $str= MD5(uniqid(Mt_rand(), true));    return$prefix. $str;}//Uniqid (prefix,more_entropy)The Uniqid () function generates a unique ID based on the current time in microseconds.prefix is optional. Specify a prefix

Scenarios that generate unique IDs are very common, such as temporary cache file names, temporary variables, temporary security codes, and so on, and the uniqid () function generates a unique ID based on the current time in microseconds. Because the

Do you need to use rand to generate a random number and then go to the database to query whether there is such a number? It seems a little time-consuming. Is there any other way? Do you need to use rand to generate a random number and then go to the

function Createid ($prefix = "") { $str = MD5 (Uniqid (Mt_rand (), true); Return $prefix. $str; } uniqid (prefix,more_entropy) The Uniqid () function generates a unique ID based on the current time in microseconds. Prefix optional. Specify