Examples of md5 and uniqid functions in php

This article introduces a few small examples of md5 and uniqid functions in PHP for reference by beginners.

1, md5 example

<?
$id = md5(uniqid(rand()));
echo "$id";
?>

2, use md5 function to encrypt text

<?php
   $val = "secret";
   echo "Pre-hash string: $val <br />";
   $hash_val = md5 ($val);
   echo "Hashed outcome: $hash_val";
?>

3, use uniqid function to generate id

<?
$id = uniqid("phpuser");
echo "$id";
?>