I'm trying to create a code that moves a string array A B C D E around based on the amount specified entered into a field in a form and the direction which is also entered into the form. What I want to do is to make the $newarray equal $array when the page is refreshed and the submit button is hit again. That way A B C D E when moved LEFT by 1 will be B C D E A and then if RIGHT and 2 is entered, you will see E A B C D. I've been struggling to get session working and just ended up more lost. Here is the code I got so far. I would greatly appreciate any help with this.
<html>
<div style="border:1px solid black;font-weight:bold;">
<div style="border:none;">A B C D E</div>
<form method="POST">
<input type="text" name="thebutton"/>
<input type="text" name="offset"/>
<input type="submit" value="SUBMIT"/>
</form>
</div>
<?php
session_start();
if (isset($_POST["offset"], $_POST["thebutton"])) {
$shift=$_POST["offset"];
$direction=$_POST["thebutton"];
$counter=0;
$array=array('A','B','C','D','E');
if ($direction=="LEFT"){
for($i=$shift; $counter+$shift<5; $i++,$counter++){
$newarray[$counter]=$array[$counter+$shift];
}
for($j=0; $j<$shift; $j++){
$newarray[$counter + $j]=$array[$j];
}
}
if ($direction=="RIGHT"){
for($counter=0,$k=5-$shift; $counter<$shift; $counter++){
$newarray[$counter]=$array[$counter+$k];
}
for($j=0; $j<5-$shift; $j++){
$newarray[$counter + $j]=$array[$j];
}
}
echo $newarray[0];
echo $newarray[1];
echo $newarray[2];
echo $newarray[3];
echo $newarray[4];
}
?> </html>