Description:
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When sending POST data by xmlhttp-ajax method from jscript client to 2.2.3 apache server (PHP receipt container), the spaces in the data are not converted to "+" signs as they are supposed to be with MIME type application/x-www-form-urlencode.  It worked before with older PHP and Apache.  Apache.org sent me over here.
I can get around this by doing a php str_replace(" ","+") to the data.

Reproduce code:
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for the record:
client (partial)- 
======
var ops = "data_container.php?file="+ filenm + "&user=" +   
  user + "&sid="+Math.random() 
xmlhttp=new ActiveXObject('Microsoft.XMLHTTP');
xmlhttp.onreadystatechange=loadSizes;
xmlhttp.open('POST', ops, false);
xmlhttp.setRequestHeader("Content-Type", 
  "application/x-www-form-urlencoded")
xmlhttp.send("xx__val=" + Base64data);

Server-
<?php
$file = $_GET['file'];
$user = $_GET['user'];
echo "<form name='form1' method='post' action=''   
   enctype='multipart/form-data' target='_blank'>";
$pre_contents = $_POST['xx__val'];