How to encrypt/decrypt data in php?

Question

I\'m currently a student and I\'m studying PHP, I\'m trying to make a simple encrypt/decrypt of data in PHP. I made some online research and some of them were quite confusin

Answer 1

I'm think this has been answered before...but anyway, if you want to encrypt/decrypt data, you can't use SHA256

//Key
$key = 'SuperSecretKey';

//To Encrypt:
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, 'I want to encrypt this', MCRYPT_MODE_ECB);

//To Decrypt:
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $encrypted, MCRYPT_MODE_ECB);