How can PHP be used to read email addresses from a text file for bulk emailing?

To read email addresses from a text file for bulk emailing using PHP, you can create a script that reads the file line by line, extracts the email addresses, and then uses a bulk email sending library or service to send the emails.

<?php
// Open the text file containing email addresses
$file = fopen("email_list.txt", "r");

// Loop through each line in the file
while (!feof($file)) {
    $email = trim(fgets($file)); // Get the email address and trim any whitespace
    // Use a bulk email sending library or service to send the email to $email
    // Example: mail($email, "Subject", "Message");
}

// Close the file
fclose($file);
?>