What security measures should be implemented when using PHP for web development?

When using PHP for web development, it is crucial to implement security measures to protect against common vulnerabilities such as SQL injection, cross-site scripting (XSS), and CSRF attacks. One way to enhance security is to sanitize user input data to prevent malicious code execution. 

// Sanitize user input data
$unsafe_data = $_POST['user_input'];
$safe_data = filter_var($unsafe_data, FILTER_SANITIZE_STRING);

// Use safe_data in your application

Keywords

Cross-site scripting SQL injection password hashing input validation secure file handling

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