What are some alternative methods to hide the content of a PHP variable when copying it to the clipboard?

When copying a PHP variable to the clipboard, the content of the variable may be visible to anyone who accesses the clipboard. To hide the content of the variable, you can use encryption or encoding techniques to obfuscate the data before copying it to the clipboard. This way, even if someone accesses the clipboard, the actual content of the variable will remain hidden.

// Encrypt the content of the variable before copying it to the clipboard
$secretVariable = "sensitive data";
$encryptedVariable = openssl_encrypt($secretVariable, 'AES-256-CBC', 'secret_key', 0, 'secret_iv');

// Copy the encrypted variable to the clipboard
exec('echo ' . escapeshellarg($encryptedVariable) . ' | pbcopy');