How can PHP functions like date() be utilized to generate unique IDs for text file databases?

To generate unique IDs for text file databases using PHP functions like date(), you can combine the current timestamp with a unique identifier like a random number or a hash of some data to ensure uniqueness. This can be achieved by concatenating the timestamp with a random number or a hash function output to create a unique ID for each record in the database.

// Generate a unique ID using current timestamp and a random number
$unique_id = date('YmdHis') . mt_rand(1000, 9999);

// Alternatively, generate a unique ID using current timestamp and a hash function
$unique_id = date('YmdHis') . md5(uniqid());