Code snippets for Post on TGHD - http://theglobalhelpdesk.com/v/900353363/

Correctly using crypt() with SHA512 - 1

<?php 
/* There are many ways to use crypt() in PHP, but I have found this to be useful and practical. */
//For generating Salt:
  $salt = substr(str_shuffle("./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz012345‌​6789"), 0, 8);
//or if you have a linux server, this is a much more random way of generating salt
  $fp = fopen(''/dev/urandom'', ''r'');
  $randomString = fread($fp, 32);
  fclose($fp);
//Base 64 encode to ensure that some characters will not cause problems for crypt
  $salt = base64_encode($randomString);
//For Hashing:
  $hashed = crypt($passwordInput, ''$6$''.$salt);
//To Confirm:
  if (crypt($passwordInput, $hashed) == $hashed) {
    // Valid action
  } else {
    // Invalid action
  }