Question

How to generate a one time password in PHP for 2 factor authentication using mobiles

Answer 1

<?php
function generatePassword($length, $strength) 
{
    $vowels = 'aeuy';
    $consonants = 'bdghjmnpqrstvz';
    if ($strength & 1) 
    {
        $consonants .= 'BDGHJLMNPQRSTVWXZ';
    }
    if ($strength & 2) 
    {
        $vowels .= "AEUY";
    }
    if ($strength & 4) 
    {
        $consonants .= '23456789';
    }
    if ($strength & 8) 
    {
        $consonants .= '@#$%';
    }
    $password = '';
    $alt = time() % 2;
    for ($i = 0; $i < $length; $i++) 
    {
        if ($alt == 1) 
        {
            $password .= $consonants[(rand() % strlen($consonants))];
            $alt = 0;
        } 
        else 
        {
            $password .= $vowels[(rand() % strlen($vowels))];
            $alt = 1;
        }
    }
    return $password;
}


    echo generatePassword(6,4);
?>