How can the logic for checking and processing email addresses in the code be improved to handle multiple occurrences of email addresses in the daemonliste.txt file?

The issue can be solved by using an array to store unique email addresses and checking if an email address already exists in the array before processing it. This way, we can prevent duplicate entries in the final list of email addresses. 

<?php
// Read the daemonliste.txt file
$emails = file('daemonliste.txt', FILE_IGNORE_NEW_LINES);

// Create an empty array to store unique email addresses
$uniqueEmails = [];

// Loop through each email address
foreach ($emails as $email) {
    // Check if the email address is not already in the uniqueEmails array
    if (!in_array($email, $uniqueEmails)) {
        // Add the email address to the uniqueEmails array
        $uniqueEmails[] = $email;
        // Process the email address here
        echo "Processing email: $email\n";
    }
}
?>

Keywords

PHP email addresses file processing validation multiple occurrences

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