php help

hai friends

if i execute the below code means, Iam able to get the result stored in fname and the second time if i enter the value it is replacing the old value
Now what i need is
for the first time if i enter the value as x, it should display as x
for the second time if i enter the value as y it should display as xY
for the third time if i enter the value as z it should display as xyz
................

for this scenario what i need to change in the below code, any body help me


file name: time.php



<?php
if(isset($_POST["sub"])){
$display=$_POST["fname"];
echo $display;
}
?>
<form method="post" action="time.php">
<input type="text" name="fname">
<input type="submit" name="sub" value="submit">
</form>


Thanks for ur help in advance

 

<?php

if (isset($_POST["sub"]))
{
	$temp = htmlspecialchars($_POST['temp'] . $_POST['fname']);
	echo $temp;
}

?>
<form method="post" action="time.php">
<input type="text" name="fname">
<input type="submit" name="sub" value="submit">
<input type="hidden" value="<?php echo isset($temp) ? $temp : ''; ?>" name="temp" />
</form>

PHP: