<?php
$a = rand(0,99);
$b = rand(0,9);
$c = rand(0,99);
$d = rand(0,9);
$random = "$a"."$b"."$c"."$d";
?>
<form action=add.php method=post name=form>
<table>
<tr>
<td>Секретен код</td>
<td><input class="commentbox" name="code1" type="tex" id="code1" value=<?php echo $random...