~ Max Possible Combination(s) Generator ~

<!DOCTYPE html>
<html>
<head>
    <title>Max Possible Combination(s) Generator</title>
    <style type="text/css">
    body {background-color: black;}
    h1 {font-family: monospace; color: white;}
    </style>
</head>
<body>
<center>
<h1>~ Max Possible Combination(s) Generator ~</h1>
<form method="POST">
    <input type="text" name="comb" />
    <font face="Monospace" color="lime"> ~ </font>
    <input type="submit" value="Generate" />
</form>
<?php
/*
Credits for the function goes to, Joel Hinz.
http://stackoverflow.com/questions/19067556/php-algorithm-to-generate-all-combinations-of-a-specific-size-from-a-single-set
                                                                                                                           */
function combinations($chars, $size, $combinations = array())
{if (empty($combinations)) {$combinations = $chars;}
if ($size == 1) {return $combinations;}
$new_combinations = array();
foreach ($combinations as $combination) {
foreach ($chars as $char) {
$new_combinations[] = $combination . $char;}}
return combinations($chars, $size - 1, $new_combinations);}

$chars = $_POST['comb']; # The Post Param
$count = 1; # Duuuh :v
if (isset($chars)){
$strspl = str_split($chars); # To get every 'char' from the param.
$strlen = strlen($chars); # To get the length of the str from the param
$result = combinations($strspl, $strlen); # Runnin the function
echo '<br><font face="Monospace" color="white">Total Possible Combinations<font color="lime"> ~ <font color="red">'.count($result).'<br>'; # Echoing the count of combinations.
foreach ($result as $r) { # Foreach statement to echo the "result"
    echo '<font color="white">'.$count++.' <font color="lime">~<font color="red"> '.$r.'<br>'; # the final result
}}
?>
</center>
</body>
</html>