What is the code for SHA512? PHP

Question

I seem to unable to find the code for SHA512. I tired SHA512 or SHA-512 but nothing. I know SHA1 - this works.

Is there other better one than SHA1? Lets me say this way, what is the latest?

Answer 1

$input = "something";

$output = hash("sha512", $text);

Note: PHP 5 >= 5.1.2