How you would encrypt decrypt

You should not encrypt passwords, instead you should hash them using an algorithm like bcrypt. Still, here is how you would encrypt/decrypt

<?php
/* 
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website: http://4evertutorials.blogspot.in/
*/

$key = 'password to (en/de)crypt';
$string = ' string to be encrypted '; // note the spaces

//To Encrypt
$encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key))));

//To Decrypt:
$decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($encrypted), MCRYPT_MODE_CBC, md5(md5($key))), "\0");

echo 'Encrypted:' . "\n";
var_dump($encrypted); // "ey7zu5zBqJB0rGtIn5UB1xG03efyCp+KSNR4/GAv14w="

echo "\n";

echo 'Decrypted:' . "\n";
var_dump($decrypted); // " string to be encrypted "

?>

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