<?php 
$simple_string = "Welcome to GeeksforGeeks\n";
  
// Display the original string
echo "Original String: " . $simple_string;
  
// Store the cipher method
$ciphering = "AES-128-CTR";
  
// Use OpenSSl Encryption method
$iv_length = openssl_cipher_iv_length($ciphering);
$options = 0;
  
// Non-NULL Initialization Vector for encryption
$encryption_iv = '1234567891011121';
  
// Store the encryption key
$encryption_key = "GeeksforGeeks";
  
// Use openssl_encrypt() function to encrypt the data
$encryption = openssl_encrypt($simple_string, $ciphering,
            $encryption_key, $options, $encryption_iv);
  
// Display the encrypted string
echo "Encrypted String: " . $encryption . "\n";
?>
