GZ - Password Generator

<?php

  function randpass() {

  $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; 

// u can include, change or exclude some characters from here

  srand((double)microtime()*1000000);

  $i = 0;

  $pass = '' ;
 while ($i != 8) { // number of character in new password

  $num = rand() % 33;

  $tmp = substr($chars, $num, 1);

  $pass = $pass . $tmp;

  $i++;

  }

  return $pass;

  }

  //

  $password = randpass();

  echo "New generated password is: $password"; 

// display new password

  ?>