php generate password ช่วยแนะนำเรื่องการตั้ง password อัติโนมัติ ให้กับ user ที่เพิ่มใหม่หน่อยค่ะ

<?php
function passwdgen( $len ){
$code = "abcdefghijklmnopqrstuvwxyz2345678910ABCDEFGHIJKLMNOPQRSTUVWXYZ"; 
srand((double)microtime()*1000000); 
for($i=0 ; $i < $len ; $i++) { 
$password = $code[rand()%strlen($code)]; 
echo $password;
} 
return $password;
}

$password = passwdgen(8);
?>

echo md5(time());

<?php

function generatePassword($length=6,$level=2){

   list($usec, $sec) = explode(' ', microtime());
   srand((float) $sec + ((float) $usec * 100000));

   $validchars[1] = "0123456789abcdfghjkmnpqrstvwxyz";
   $validchars[2] = "0123456789abcdfghjkmnpqrstvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
   $validchars[3] = "0123456789_!@#$%&*()-=+/abcdfghjkmnpqrstvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_!@#$%&*()-=+/";

   $password  = "";
   $counter   = 0;

   while ($counter < $length) {
     $actChar = substr($validchars[$level], rand(0, strlen($validchars[$level])-1), 1);

     // All character must be different
     if (!strstr($password, $actChar)) {
        $password .= $actChar;
        $counter++;
     }
   }

   return $password;

}