What are common pitfalls to avoid when integrating HTML forms with PHP scripts for data processing?

One common pitfall is not properly sanitizing user input from HTML forms before processing it with PHP scripts, leaving the application vulnerable to security risks such as SQL injection attacks. To avoid this, always use functions like htmlspecialchars() or mysqli_real_escape_string() to sanitize user input before using it in database queries. 

// Example of sanitizing user input from an HTML form before processing it with PHP
$user_input = $_POST['user_input']; // Assuming user input from a form field

// Sanitize the user input using htmlspecialchars()
$sanitized_input = htmlspecialchars($user_input);

// Now you can safely use $sanitized_input in your PHP script

Keywords

HTML forms PHP scripts data processing validation security

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