<form action=''  method = 'post'>
<input type = 'text' name = 'guess' value = '<? echo $guess[0]; ?>'>
<input type = 'text' name = 'guess' value = '<? echo $guess[1]; ?>'>
<input type = 'text' name = 'guess' value = '<? echo $guess[2]; ?>'>
<input type = 'text' name = 'choice' value = '<? echo $choice; ?>'>
</form>

<?php


$guess = $_POST['$guess'];
$choice = $_POST['$choice'];


print "Is your number ";

if (empty($guess)){
$guess = array();
$guess[0] = 50;
print $guess[0];
}

print "<br><br>";
var_dump($guess);
print "<br><br>";

if ($choice == 'big'){
print $guess[1]=($guess[0] / 2);
} elseif ($choice == 'small') {
print $guess[2]=($guess[0] + 25);
} elseif ($choice == 'gotIt') {
print "YOU WON!";
}

print "?<br><br>";

print "<br><br>";
var_dump($guess);
print "<br><br>";

?>
<form action=""  method = "post">	
	<input type = "radio" name = "choice" value = "big">My number is bigger, dude!<br>
	<input type = "radio" name = "choice" value = "small">My number is smaller, muuuch smaller, mate!<br>
	<input type = "radio" name = "choice" value = "gotIt">YOU GOT IT! IT CANNOT BE!! :D<br><br>
	<input type = "submit" value = "tell him!">
			
	<input type = 'text' name = 'guess[0]' value = '<? echo $guess[0]; ?>'>
	<input type = 'text' name = 'guess[1]' value = '<? echo $guess[1]; ?>'>
	<input type = 'text' name = 'guess[2]' value = '<? echo $guess[2]; ?>'>
</form>	

<?
print "<br><br>";
var_dump($guess);
print "<br><br>";