What are the potential security risks involved in implementing automatic printing from a form submission in PHP?

One potential security risk involved in implementing automatic printing from a form submission in PHP is the possibility of injection attacks. To mitigate this risk, it is important to sanitize and validate user input before using it in the printing process. This can help prevent malicious code from being executed on the server. 

// Sanitize and validate user input before printing
$user_input = $_POST['user_input'];
$clean_input = filter_var($user_input, FILTER_SANITIZE_STRING);

echo $clean_input; // Print the sanitized input

Keywords

XSS SQL injection file inclusion CSRF data validation

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