How can PHP developers ensure that sensitive information, such as user identification, is securely transmitted and stored in their applications?

To ensure sensitive information is securely transmitted and stored in PHP applications, developers should use HTTPS for secure communication, encrypt sensitive data before storing it in databases, and use secure coding practices to prevent vulnerabilities like SQL injection or cross-site scripting. 

// Example of encrypting sensitive data before storing it in a database
$plaintext = "Sensitive information";
$key = "secret_key";
$encrypted_data = openssl_encrypt($plaintext, 'AES-256-CBC', $key, 0, '16charsofiv1234');
// Store $encrypted_data in the database

Keywords

SSL encryption secure storage password hashing input validation

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