What potential pitfalls should be considered when using PHP to handle email parsing and SMS sending?

One potential pitfall when using PHP to handle email parsing and SMS sending is the risk of injection attacks if user input is not properly sanitized. To prevent this, always validate and sanitize user input before using it in email headers or SMS messages. Additionally, ensure that your server has the necessary permissions to send emails and SMS messages. 

// Sanitize user input before using it in email headers or SMS messages
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
$message = filter_var($_POST['message'], FILTER_SANITIZE_STRING);

// Ensure server has necessary permissions to send emails and SMS messages
// For sending emails
ini_set('sendmail_from', 'your@email.com');
ini_set('SMTP', 'your.smtp.server');

// For sending SMS messages using a service like Twilio
$twilio_sid = 'your_twilio_sid';
$twilio_token = 'your_twilio_token';
$twilio_number = 'your_twilio_number';
$client = new Twilio\Rest\Client($twilio_sid, $twilio_token);

Keywords

email parsing SMS sending PHP error handling security vulnerabilities

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