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+--- Thread: unique user id tie in with paypal (/showthread.php?tid=72887)
unique user id tie in with paypal - scatman98 - 02-25-2019
hi guys
i have a website with a service on it which works without a login system. i want to charge for it through payment gateway, how do i ensure that each session for the user is unique when multiple users access the same service?
example if user A inputs 2+2=?, then website redirects him to payment gateway after which result 4 is shown.
but while user A completes his session another user B comes in and wants to know 3+5= ?, say if i have a 100 users simultaneously starting sessions wanting to know their results how do i go about handling them?
RE: unique user id tie in with paypal - InsiteFX - 02-25-2019
You could add a session variable using a unique code.
Here is a helper function to generate a unique code
PHP Code:
// -----------------------------------------------------------------------
/**
* guidV4 ()
* -----------------------------------------------------------------------
*
* A universally unique identifier (UUID) it is a 128-bit number
* used to identify information in computer systems.
*
* xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx
*
*/
if ( ! function_exists('guidV4'))
{
/**
* guidV4 ()
* -------------------------------------------------------------------
*
* @return string
*/
function guidV4()
{
// Microsoft guid {xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx}
if (function_exists('com_create_guid') === true)
{
return trim(com_create_guid(), '{}');
}
$data = openssl_random_pseudo_bytes(16);
// set version to 0100
$data[6] = chr(ord($data[6]) & 0x0f | 0x40);
// set bits 6-7 to 10
$data[8] = chr(ord($data[8]) & 0x3f | 0x80);
return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}
}