What are potential issues with using a form mailer to assign customer numbers in PHP?

One potential issue with using a form mailer to assign customer numbers in PHP is that the customer number generation may not be unique, leading to potential conflicts or errors in the system. To solve this issue, you can use a more robust method for generating unique customer numbers, such as using a combination of timestamp and random numbers.

// Generate a unique customer number using timestamp and random numbers
$customerNumber = time() . mt_rand(1000, 9999);