What are common reasons for PHP scripts to break or time out when sending bulk emails?

Common reasons for PHP scripts to break or time out when sending bulk emails include inefficient code causing high resource usage, large email lists overwhelming the server, and connection issues with the SMTP server. To solve this, optimize the code to reduce resource usage, batch emails into smaller groups, and handle connection errors gracefully. 

// Example code snippet to send emails in batches to prevent timeouts

// Define email list
$emails = array('email1@example.com', 'email2@example.com', 'email3@example.com', ...);

// Set batch size
$batchSize = 50;

// Split email list into batches
$emailBatches = array_chunk($emails, $batchSize);

// Loop through batches and send emails
foreach ($emailBatches as $batch) {
    foreach ($batch as $email) {
        // Send email code here
    }
}

Keywords

SMTP mail server timeout memory limit email queue

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