What alternative methods can be used to run background processes in PHP without relying on the exec() function?

Using the exec() function to run background processes in PHP can be a security risk and may not be available on all server configurations. An alternative method to run background processes in PHP is to use the pcntl_fork() function, which creates a child process that can run independently of the parent process.

$pid = pcntl_fork();
if ($pid == -1) {
    die('Could not fork');
} else if ($pid) {
    // Parent process
    // Do something here if needed
    pcntl_wait($status); // Wait for the child process to finish
} else {
    // Child process
    // Run your background process here
    // Make sure to include an exit statement at the end
    exit();
}