[RESOLVED] Bizarre concatenation problem

[SpeedBird]

I can't figure this out. I have the following:

<?php
$TillID = $_POST['tillid'];
$BranchID = $_POST['branchid'];
$TransactionNumber = $_POST['transactionnumber'];

$trackingnumber = $TillID . $BranchID . $TransactionNumber;

echo "$trackingnumber\n\n";
echo "$TillID $BranchID $TransactionNumber"; 
?>

This outputs:

lWWmm

a12 WW 9181

(the values should be a12, WW, 9181).

I've no idea where the 'l' or 'mm' are coming from (they are not values returned by anything in the code). Thinking the concatenation was the problem I have also tried:

<?php

$trackingnumber = "$TillID$BranchID$TransactionNumber";

?>

and

<?php

$trackingnumber = $TillID;
$trackingnumber .= $BranchID;
$trackingnumber .= $TransactionNumber;

?>

The result is always the same. Really scratching my head over this one.

[SpeedBird]

Never mind, it is working now. All I did was add $test1 = $trackingnumber; $test2 = $trackingnumber; etc. at periodic intervals in the script to try and identify exactly where the value was being modified. It returned correctly every time when I did that. I removed the $test* variables from the script and it still worked.

Oh well.