Jun 26, 2014 phpserial. PHP Serial Key Generator, very simple but effective. Includes random keys, multipart random keys and custom formatted keys. Simple and easy. Generate Serial numbers. This tool can generate up to 250,000 unique random codes at a time. Not logged in, it's limited to 1000 codes per batch. If you own a Random Code Generator account, it can generate an unlimited amount of codes in batches of 250.000 each! Update (12/2015): For PHP 7.0, you should use randomint instead of mtrand as it provides 'cryptographically secure values'. Personally, I like to use sha1(microtime(true).mtrand(0)) but you are looking for more of a customizable approach, so try this function (which is a modification to your request of this answer). Feb 13, 2013  The key is guaranteed unique by way of the second code block. Before storing the key in the database, a while loop ensures that the key hasn’t already been assigned to a record. Crypt is another solution, possibly a better solution, but sometimes you want to make sure that the string is easy to read out loud or type manually.

1. Php Generate Random License Key Code
2. Php Generate Random License Key Generator
3. Random Number Generator Php

Generates a random key, a-Z 0-9 with no max length

Usage

Php Generate Random License Key Code

Use as demonstrated in the comment. This can be good to append to a url and store in a database, and check for in a site registration during email validation (i.e. http://site.com/register.php?connfirmationcode=2QwYbI0mf4exPi

Php Generate Random License Key Generator

Comments

Tahnks !!

hi, guest your code is awesome than the original one.its user friendly and we can change our key characters easily by editing $options. i prefer your code than the original one posted.

Nice function guys. I will be using it to write a function for generating card pins for web login. Pins generated are stored on a database. When a pin is generated it is matched with the ones on the database if it exits, it is discarded if not exit, it is added to the database.
What do you think?

What about uniqueness?

fuck

Random Number Generator Php

nice, i use something similar
<?php
function generatekey($length)
{
$options = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$code = ';
for($i = 0; $i < $length; $i++)
{
$key = rand(0, strlen($options) - 1);
$code .= $options[$key];
}
return $code;
}
// echo generatekey(10); // Ko9B69utve, returned result is random. not only is this good for ac validatin but has several other applicvations, eg captch ect its uses are limitless.
?>