unset and global behavior problems.

[email protected] ("Andrew A. Neuschwander") Fri, 19 May 2000 11:20:23 -0600 (MDT)

Newsgroups	php.version4
Message-ID	<[email protected]>

While working with the sourceforge php code, I can across this behavioral
difference between php 3 and 4. I wanted to know if this is an intended
change or not.  The following script does very different things in the two
versions.

<?php
function thing() {
  global $var;
  unset($var);
  $var = "Simpson"; 
}
$var = "Homer";
echo "$var<br>";
thing();
echo "$var<br>";
?>

In php3 the output is :

Homer
Simpson

In php4 the output is :

Homer
Homer

Is this change a bug or intentional? 

Thanks,
Andrew N.
[email protected]
[email protected]