What role do cronjobs play in automating newsletter sending in PHP?

Cronjobs play a crucial role in automating newsletter sending in PHP by allowing you to schedule the execution of a PHP script at specific intervals. By setting up a cronjob to run a PHP script that sends out newsletters, you can automate the process and ensure that your subscribers receive timely updates without manual intervention.

// Create a PHP script to send newsletters
// newsletter_sender.php

// Code to send newsletters
// This can include fetching newsletter content from a database, generating HTML emails, and sending them to subscribers

// Set up a cronjob to run this script at regular intervals
// For example, to run the script every day at midnight, add the following line to your crontab file
// 0 0 * * * php /path/to/newsletter_sender.php