What are the recommended methods for securely passing parameters from a PHP script to another script for data retrieval?

When passing parameters from one PHP script to another for data retrieval, it is important to ensure that the data is securely transmitted to prevent any unauthorized access or manipulation. One recommended method is to use encryption techniques, such as hashing or encryption algorithms, to protect the parameters before sending them. Additionally, using HTTPS protocol for communication can add an extra layer of security to prevent data interception. 

// Encrypt the parameter before passing it to the other script
$parameter = 'sensitive_data';
$encrypted_parameter = openssl_encrypt($parameter, 'AES-256-CBC', 'secret_key', 0, '16_character_iv');

// Pass the encrypted parameter to the other script using a secure method (e.g. HTTPS)
$url = 'https://example.com/data_retrieval_script.php?param=' . urlencode($encrypted_parameter);
$response = file_get_contents($url);

// Decrypt the parameter in the data retrieval script
$decrypted_parameter = openssl_decrypt($_GET['param'], 'AES-256-CBC', 'secret_key', 0, '16_character_iv');

Keywords

PHP data retrieval secure parameters script

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