How can PHP developers ensure data security and prevent vulnerabilities when implementing text input features?

To ensure data security and prevent vulnerabilities when implementing text input features in PHP, developers should sanitize and validate user input to prevent SQL injection and cross-site scripting attacks. One way to achieve this is by using PHP's filter_input function with appropriate filters to sanitize and validate user input before using it in database queries or displaying it on the web page. 

$text_input = filter_input(INPUT_POST, 'text_input', FILTER_SANITIZE_STRING);

if ($text_input !== false) {
    // Use the sanitized input in your code
} else {
    // Handle invalid input
}

Keywords

SQL injection cross-site scripting input validation prepared statements encryption.

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