- uniqid: documentation ( source)
- rand: documentation ( source)
- md5: documentation ( source)
<?php
$var1=rand();
$var2=uniqid($var1);
$var3=uniqid($var1);
$var4=md5($var2);
$var5=md5($var3);
echo $var1 . "</br>";
echo $var2 . "</br>";
echo $var3 . "</br>";
echo $var4 . "</br>";
echo $var5 . "</br>";