PHP Aplication Distribution Licensing

What is PADL?

A class to generate and validate licenses for a domain, restricting an expire date.

Demo

See the PADL Site.

History

PADL is a originaly written in 2005 by Oliver Lillie under older PHP4, parked on PHPCLASSES site. You can find the original code as part as this distribution or directelly in http://www.phpclasses.org/package/2298-PHP-Generate-PHP-application-license-keys.html .

It was updated to PHP 5.2,5.3 by Raphael Goulart (https://github.com/rafaelgou/padl)

And later modified to use composer by me

You can find more about the original author in:

• PHP CLASSES: Classes of Oliver Lillie
• PHP CLASSES: Professional profile of Oliver Lillie
• Otherwise a lot of modifications has been made, all core methods and examples are or just a copy or strongly based on the original project.

Generate:

/*
Instance of License
parameters:
- useMcrypt
- useTime
- useServer
- allowLocal
*/
$padl = new Padl\License(true, true, true, true);

//For better security injecting a copy of $_SERVER global var
$server_array = $_SERVER;
$padl->setServerVars($server_array);

$date_expire = '12/31/2011';
list($month, $day, $year) = explode($date_expire);
// Calculating the time offset (expire_in)
$now       = mktime(date('H'), date('i'), date('s'), date('m'), date('d') , date('Y'));
$dateLimit = mktime(23, 59, 59, $month, $day, $year);
$expireIn  = $dateLimit - $now;

// Generating a key with your server details
$license = $padl->generate('localhost', 0, $expire_in);

// Save the license anywhere, database, filesystem, even remotely

Validate

/*
Instance of License
parameters used in this sample:
- useMcrypt  = false 
- useTime    = true
- useServer  = false
- allowLocal = true
*/
$padl = new PadlLicense(true, true, true, true);

// For better security injecting a copy of $_SERVER global var
$server_array = $_SERVER;
$padl->setServerVars($server_array);

// get the license from a form, or load from database, filesystem
$license = (... load the license ...);

// the set key is the key validated
$results = $padl->validate($license);