<?php
/**  Encryption setup CODE  **/
$key = openssl_pkey_new(array('private_key_bits' => 2048));

$private_key = openssl_pkey_get_details($key);
$public_key = $private_key['key'];

echo "<pre>";
print_r($private_key);
echo "</pre>";


/** Encryption CODE **/
$msg = "Hi, im sending you a private message";
openssl_public_encrypt($msg, $pvt_msg, $public_key);

echo "<pre>";
print_r($msg);
print_r($pvt_msg);
echo "</pre>";


/**  Decryption CODE **/
openssl_private_decrypt( $pvt_msg, $received_msg, $key);
print $received_msg;
?>