[SOLVED] How to Generate a product serial number?

[random1]

How can you use PHP to generate a serial number?

 

e.g. DF34-VB89-98AP-34NQ-QQUI-23AW

[gs]

<?php

echo rand();

?>

 

This generates a random number, and to control from what minimum number to maximum, you have to enter min, and max values like this:

 

<?php

echo rand(1,10);

?>

 

This generates random number from 1-10.

 

Im not to sure how you can get letters in there though...

 

 

[toplay]

Write a function to do it based on the criteria/format you're looking for and then check the serial generated in your database to make sure it's not already used (if so, generated a different one and check again).

 

You can use the char(rand(65, 90)) to produce a random character between A to Z.

 

http://us.php.net/char

 

 

[cooldude832]

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.

 

Also if u do do what i said make sure u check each serial number against the database before assuming its the valid because 1 in a billion (probably a trillion) will match but if u have a million+ rows in a database that will improve a chance of a match

[nrg_alpha]

$str = array();
for($i = 0; $i < 20; $i++){
      if($letter_OR_number = rand(0,1)){ // true: alphabet chosen
         $str[] = chr(rand(65, 90));
      } else { // false: number chosen
         $str[] = rand(0,9);
      }
      if($i % 4 == 3){
         $str[] = ' ';
      }
}

foreach($str as $val){
echo $val;
}

 

The above code doesn't insert a '-' inbetween every 4 characters.. but if you need it, substitute the modulus if statement with:

if($i % 4 == 3){
   ($i < 19)? $str[] = '-': $str[] = ' ';
}

[Barand]

or

<?php
function sernum()
{
    $template   = 'XX99-XX99-99XX-99XX-XXXX-99XX';
    $k = strlen($template);
    $sernum = '';
    for ($i=0; $i<$k; $i++)
    {
        switch($template[$i])
        {
            case 'X': $sernum .= chr(rand(65,90)); break;
            case '9': $sernum .= rand(0,9); break;
            case '-': $sernum .= '-';  break; 
        }
    }
    return $sernum;
}

    /**
    * try it
    */
echo '<pre>';

for ($i=0; $i < 10; $i++) echo sernum(), '<br/>';

echo '</pre>';
?>    

-->
WS41-IZ91-55XO-23WA-WVZS-20VK
SJ42-CV50-79DA-55UV-TERR-28IJ
LY80-CN84-69LV-73EW-ZZEU-09AI
IS86-RG15-39CG-38HK-XLUG-86FO
QX64-ZG67-31IO-45IS-SVSJ-91BG
OU45-IW50-67KZ-24PZ-QLGI-56XR
KP73-YG29-50PT-19IN-ALPK-94ZD
JP59-CR85-42CE-32UN-ZDBV-38MU
TA16-AL61-46EL-95EH-XTVW-00SZ
UC87-YS99-84CV-42UA-YOFV-23WX

[random1]

Thanks everyone, very helpful

 

Props to Barand for creating a really good example.

[redarrow]

 

 

This is another way but it the long way around the format not the same......

 

learnig the last post

 

 

<?php
$x=array("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");
$y=array("0","1","2","3","4","5","6","7","8","9");

shuffle($x);
shuffle($y);

$x=implode('',$x);
$y=implode('',$y);

$x=strtoupper($x);

$res1=substr($x,0,2);
$res2=substr($y,1,2);

$res3=substr($x,2,3);
$res4=substr($y,0,1);

$res5=substr($x,0,3);
$res6=substr($y,0,2);

$result=$res1.$res2;
$result1=$res3.$res4;
$result2=$res5.$res6;

echo "$result-$result1-$result2";

?>

[mr_michael]

Hi, Barand! ..

 

I'm php newbie n I really like your php key generator..

 

but Now I don't know how to add your generated key to mysql database..

 

Definitely, I'm trying to change WoW default Keygenerator to xxxx-xxxx-xxxx-xxxx-xxxx format.

 

function createKeys()

{
global $Account, $DB;
    if($_POST['num'] < 300)
{


        $keys_arr = $Account->generate_keys($_POST['num']);
        foreach ($keys_arr as $key) 
	{	

            $DB->query("INSERT INTO mw_regkeys (`key`) VALUES('$key')");
        }
    }

    output_message('success', $_POST['num'].' Keys added to the database! Please wait to be re-directed...
	<meta http-equiv=refresh content="3;url=?p=admin&sub=regkeys">');
}

It's in create function. I don't know where and how I've to use it to change.

 

Is there anyone can guide me to change?

 

 

or

<?php
function sernum()
{
    $template   = 'XX99-XX99-99XX-99XX-XXXX-99XX';
    $k = strlen($template);
    $sernum = '';
    for ($i=0; $i<$k; $i++)
    {
        switch($template[$i])
        {
            case 'X': $sernum .= chr(rand(65,90)); break;
            case '9': $sernum .= rand(0,9); break;
            case '-': $sernum .= '-';  break; 
        }
    }
    return $sernum;
}

    /**
    * try it
    */
echo '<pre>';

for ($i=0; $i < 10; $i++) echo sernum(), '<br/>';

echo '</pre>';
?>    

-->
WS41-IZ91-55XO-23WA-WVZS-20VK
SJ42-CV50-79DA-55UV-TERR-28IJ
LY80-CN84-69LV-73EW-ZZEU-09AI
IS86-RG15-39CG-38HK-XLUG-86FO
QX64-ZG67-31IO-45IS-SVSJ-91BG
OU45-IW50-67KZ-24PZ-QLGI-56XR
KP73-YG29-50PT-19IN-ALPK-94ZD
JP59-CR85-42CE-32UN-ZDBV-38MU
TA16-AL61-46EL-95EH-XTVW-00SZ
UC87-YS99-84CV-42UA-YOFV-23WX