<?php
if(isset($_POST['generation'])) {
$simvoli = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$broi = 6;
$count = strlen($simvoli)-1;
for ($i=0; $i<$broi; $i++) {
$random = mt_rand(0, $count);
$rand .= $simvoli{$random};
}
echo md5($rand);
}
echo '<form method="POST" action="">
<input type="submit" name="generation" value="Генерирай" />
</form>';
?>