PHP Generate Random Passwords

This is a small script written in PHP which will help you to generate N passwords of N length in less than 1ms 😛

Make sure you have PHP installed, then copy this code to a file called randompass.php

#!/usr/bin/php -q
<?
// no i,l,o keep passwords easy
$chars = "abcdefghjkmnpqrstuvwxyz0123456789";
$passlen = (intval($argv[1])? intval($argv[1]):6);
$passnum = (intval($argv[2])? intval($argv[2]):1);

echo "Generating $passnum passwords of $passlen letters/numbers\n";
// feed the random God :P
srand(((int)((double)microtime()*1000003)));

for ($i=1;$i<=$passnum;$i++) _gen_pass();

function _gen_pass() {
  global $chars, $passlen;
  $cnt = 1;
  while ($cnt <= $passlen) {
    $myrand = rand() % 33;
    $tmp = substr($chars, $myrand, 1);
    if (rand(0,1)) $tmp = strtoupper($tmp);
    $pass = $pass . $tmp;
    $cnt++;
  }
  echo $pass . "\n";
}

?>

#!/usr/bin/php -q

// no i,l,o keep passwords easy

$chars = "abcdefghjkmnpqrstuvwxyz0123456789";

$passlen = (intval($argv[1])? intval($argv[1]):6);

$passnum = (intval($argv[2])? intval($argv[2]):1);

echo "Generating $passnum passwords of $passlen letters/numbers\n";

// feed the random God :P

srand(((int)((double)microtime()*1000003)));

for ($i=1;$i<=$passnum;$i++) _gen_pass();

function _gen_pass() {

global $chars, $passlen;

$cnt = 1;

while ($cnt <= $passlen) {

$myrand = rand() % 33;

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

if (rand(0,1)) $tmp = strtoupper($tmp);

$pass = $pass . $tmp;

$cnt++;

}

echo $pass . "\n";

}

Now you have the file don’t forget to make it executable:

chmod +x randompass.php

1	chmod +x randompass.php

How it works? See some examples:

Usage: ./randompass.php [password_length] [password_number]

# The default execution will drop 1 password of 6 letters/numbers
./randompass.php
Generating 1 passwords of 6 letters/numbers
9hBEq1

# want 5 passwords of 12 letters/numbers ?
./randompass.php 12 5
Generating 5 passwords of 12 letters/numbers
ug5Tj8fP3w26
Tn9fnSjy2PmJ
NRqC6m8J0svn
YFQ6g3WnHH8r
ds56SnQvsBEq

Usage: ./randompass.php [password_length] [password_number]

# The default execution will drop 1 password of 6 letters/numbers

./randompass.php

Generating 1 passwords of 6 letters/numbers

9hBEq1

# want 5 passwords of 12 letters/numbers ?

./randompass.php 12 5

Generating 5 passwords of 12 letters/numbers

ug5Tj8fP3w26

Tn9fnSjy2PmJ

NRqC6m8J0svn

YFQ6g3WnHH8r

ds56SnQvsBEq

That’s all, use it for what you need, don’t try to break it or find stupid bugs 😛

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