Php Generate Unique License Key Rating: 8,8/10 4037 votes

The uniqid function generates a unique ID based on the microtime (the current time in microseconds). Note: The generated ID from this function does not guarantee uniqueness of the return value! To generate an extremely difficult to predict ID, use the md5 function. I had to develop a keygen which will combine the username of the PC and board serial to generate a unique serial key which cannot be used on another PC.pls how do i get the hardware board ID & username ppty and how do u integrate those values for producn a unique serialID. A code snippet wil help 2. Steam key cs 1.6 generator. Although I can use this class to generate unique number in some sense but it is also not collision less. Moreover while generating key we can make key more complicated by making it as alpha numeric rather than numeric only. So, I used this class along with some character masking to generate unique key of fixed length. Below is code sample. This package can generate and validate software license keys. It takes as parameters several values like the name of the licensed user, license date, application id and the user computer host name. The package can generate a string that combines these parameter values using hashing algorithm. Aug 17, 2008 if u are going to store that product serial number in a database please do not use it as the PK of the table but as a secondary item to the database it will help you alot. I would like to create a unique key for both account activation and referral purposes, that includes a checksum to help prevent users from easily guessing other users activation or referral keys. Also, in PHP is it possible to create you own session key? If so, how would you make this unique? Any help is greatly appreciated. An article on license key generation. Hi, The 'Windows Insider Build 17115' has a LARGE BUG in it and when you attempt to download a File the Banner at the bottom of the screen shows 'Running Security Scan' and Hangs at that point.

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Php Generate Unique License Key Code

Here's my final version of a GUIDv4 function (based on others work here) that should work on all platforms and gracefully fallback to less cryptographically secure version if others are not supported..
<?php
/**
* Returns a GUIDv4 string
*
* Uses the best cryptographically secure method
* for all supported pltforms with fallback to an older,
* less secure version.
*
* @param bool $trim
* @return string
*/
function GUIDv4 ($trim = true)
{
// Windows
if (function_exists('com_create_guid') true) {
if ($trim true)
return trim(com_create_guid(), '{}');
else
return com_create_guid();
}
// OSX/Linux
if (function_exists('openssl_random_pseudo_bytes') true) {
$data = openssl_random_pseudo_bytes(16);
$data[6] = chr(ord($data[6]) & 0x0f 0x40); // set version to 0100
$data[8] = chr(ord($data[8]) & 0x3f 0x80); // set bits 6-7 to 10
return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}
// Fallback (PHP 4.2+)
mt_srand((double)microtime() * 10000);
$charid = strtolower(md5(uniqid(rand(), true)));
$hyphen = chr(45); // '-'
$lbrace = $trim ? ' : chr(123); // '{'
$rbrace = $trim ? ' : chr(125); // '}'
$guidv4 = $lbrace.
substr($charid, 0, 8).$hyphen.
substr($charid, 8, 4).$hyphen.
substr($charid, 12, 4).$hyphen.
substr($charid, 16, 4).$hyphen.
substr($charid, 20, 12).
$rbrace;
return $guidv4;
}
?>