What are the potential pitfalls of handling multiple data records in a PHP form submission?

When handling multiple data records in a PHP form submission, one potential pitfall is not properly sanitizing and validating the input data, which can lead to security vulnerabilities such as SQL injection or cross-site scripting attacks. To solve this issue, always sanitize and validate user input before processing it in your PHP script. Additionally, ensure that your PHP script can handle multiple data records efficiently without causing performance issues. 

// Sanitize and validate input data before processing
foreach($_POST['records'] as $record){
    $sanitizedData = filter_var_array($record, FILTER_SANITIZE_STRING);
    
    // Validate the sanitized data
    if($sanitizedData['field1'] && $sanitizedData['field2']){
        // Process the data
        // Your code here
    } else {
        // Handle validation errors
        // Your code here
    }
}

Keywords

SQL injection data validation XSS attacks form handling data sanitization

Related Questions