Encrypt

//PHP password hash:

$hash = password_hash("CLEAR", PASSWORD_DEFAULT);
$ok = password_verify("CLEAR", "HASHED");

//Openssl encript decript:

$hash = openssl_encript("CLEAR", "AES-128-ECB", "SECRETKEY");
$plain = openssl_decript("HASHED", "AES-128-ECB", "SECRETKEY");

//CRYPT:

$hash = crypt("CLEAR TEXT");
$ok = hash_equals("HASHED", crypt("CLEAR", "HASHED"));


//MD5:

$hash = md5("CLEAR");
$ok = md5("CLEAR") == $hash;

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https://code-boxx.com/simple-password-encryption-php/