Random Password Generator in PHP(Updated)

Filed Under (PHP Code Samples) by Srikanta on May-30-2007

This random password generator generates the password upto a desired length and includes the desired set of characters. It ensures that you will get atleast one random character from the character type you have choosen.

Click here to see the demo of the Random Password Generator

Code (php)

<?
$Source[0] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
$Source[1] = "0123456789";
$Source[2] = "!@#$%^*_-+=?|:";
if($_POST['submit'] == 1)
{
if($_POST['alpha'] == '' && $_POST['num'] == '' && $_POST['other'] == '')
{
$Error = "Please provide 'Password Type'.";
}
else
{
if($_POST['alpha'] == '1')
{
$Use[] = $Source[0];
}
if($_POST['num'] == '1')
{
$Use[] = $Source[1];
}
if($_POST['other'] == '1')
{
$Use[] = $Source[2];
}
$Passwordlen = $_POST['passwordlen'] ;
if($Passwordlen >= count($Use))
{
$Min = 0;
while($i < $Passwordlen)
{
$Max = strlen($Use[$i % count($Use)])-1;
$Rand = rand($Min,$Max);
$Password .= substr($Use[$i % count($Use)],$Rand,1);
$i++;
}
}
else
{
$Error="Please enter password length  greater than number of 'Password Type' selected.";
}
}
}
?>

<html>

<head>

<style>

<!--

.box{

        background-color:#ba0808;

        color:#ffdf9a;

        font-size:20px;
}

.header{

        background:#6f0006;

        color:#ffa200;
}

.password{

        background:#630102;

        color:#ffa200;
}

-->

</style>


</head>

<body>

<CENTER>

<div class="box">

<form method="POST">

<div class="header">

<h1>Password Generator</h1>

</div>

<table class="box">
<?
if($Error != '')
{
?>

<tr>

<td>

                <font color="#ffa200" size="6"><?=$Error;?></font>

        </td>

</tr>

<?
}
?>

<tr>

<td>

                Enter your password length:

<input type="text" name="passwordlen" size="2" maxlength="2" value="<?=$_POST['passwordlen'];?>">

</td>

</tr>

<tr>

<td>

                Please Select Characters to be used in the password:

</td>

</tr>

<tr>

<td>

<input type="checkbox" name="alpha" value="1"<?
if($_POST['alpha']!='')
{
echo"checked";
}
?>

>Use Alphabets (e.g., QlqzkBKrod )

</td>

</tr>

<tr>

<td>

<input type="checkbox" name="num" value="1"<?
if($_POST['num']!='')
{
echo"checked";
}
?>

>Use Numbers (e.g., 5122401523)

</td>

</tr>

<tr>

<td>

<input type="checkbox" name="other" value="1"<?
if($_POST['other']!='')
{
echo"checked";
}
?>

>Use Other Characters (e.g., ?=:!?%^-@|  )

</td>

</tr>

<tr>

<td>

<input type="hidden" name="submit" value="1">

<input type="submit" value="Generate">

        </td>

</tr>


</TABLE>

</form>

<div class="password">
<?
if($Password != '')
{
?>

<h2>Generated Password: <?=$Password;?></h2>

<?
}
elseif($Error != '')
{
?>

<h2>Error : <?=$Error?></h2>

<?
}
else
{
?>

<h3>Password Generater</h3>

<?
}
?>

</div>

</div>


</CENTER>

</body>

</html>

del.icio.us Digg Reddit StumbleUpon Technorati

{3 Comments posted}

Muhammad Ali on September 11th, 2008 at 12:43 pm #

Thankyou So Musch for Sharing Such Complete Script, This has save my time, Its a perfect and correct script. Thanks Again
– Ali –

ajay on September 17th, 2008 at 4:04 pm #

greate work man thank for that

AArtz on November 17th, 2008 at 10:24 am #

Something I have used in the past is:

$pass=substr(md5(microtime()), 0, 6);

Its a quick/dirty one-liner that gets the job done. Not very much control over output but might help someone out.

Archives

Categories

Blogroll

Meta