Description:
------------
When executing this code from STDIN (via CLI), an extra 'D' character appears in the output for the first time the function is executed.

It behaves normally when its reading the code from a file. Could this be the 'D' character from the 'Ctrl-D' combination somehow appearing?

Configure:
'./configure' '--prefix=/usr/local/php5' '--with-apxs2' '--disable-cgi' '--disable-ipv6' '--with-openssl' '--enable-bcmath' '--with-bzip2' '--with-curl' '--with-gd' '--enable-gd-native-ttf' '--with-imap' '--with-mysql=/usr/local/lib/mysql' '--enable-soap' '--with-xmlrpc' '--with-zlib-dir=/usr'

Reproduce code:
---------------
<?php
function a() {
	$var = 4;
	print $var . "\n";
}

a();
a();
?>

Expected result:
----------------
4
4

Actual result:
--------------
4D
4