Simple password generator

Due to a lack of creativity in my passwords I decided to make a small and simple password generator. This is as simple as it gets. It looks terrible but works like a charm 🙂

if you want to see/try it you can find it here: Simple Password Generator

Here is the code:

$letters = array('a','b','c','d','e','f','g','h','i','j','k','l','m',

$capitals = array('A','B','C','D','E','F','G','H','I','J','K','L','M',

$numbers = array(1,2,3,4,5,6,7,8,9,0);

$specials = array('-','_','!','@','%','€','&','?','+','*','/');

if(isset($_POST['create']) && is_numeric($_POST['characters'])){
    $chars = array();
    $password = array();

        $chars = array_merge($chars, $letters);
        $chars = array_merge($chars, $capitals);
        $chars = array_merge($chars, $numbers);
        $chars = array_merge($chars, $specials);
    $characters = $_POST['characters'];
    for($i = 0;$i < $characters;$i++){
        array_push($password, $chars[rand(0,count($chars, true))]);

    $pass = implode("",$password);


The following assumptions apply:
create is the name of the submit button of the form
characters is the value from the textfield containing the number of characters for the password
letters is a checkboxvalue telling the program to use the letters array
numbers is a checkboxvalue telling the program to use the numbers array
special is a checkboxvalue telling the program to use the special characters array
$pass variable contains the newly created password

NOTE: This code is not ment for public use since it obviously lacks many error checking and anti hacking features

Testet in PHP v5.3.3

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