Description:
------------
http://www.php.net/manual/en/class.dir.php has example code which does not check the return value of the dir() constructor. This causes a fatal error if the directory does not exist.

Reproduce code:
---------------
$d = dir("/not/existing"); 
echo "Handle: " . $d->handle . "\n";
echo "Path: " . $d->path . "\n";
while (false !== ($entry = $d->read())) {
   echo $entry."\n";
}
$d->close();

Expected result:
----------------
The value of $d should be tested in the example code, e.g.

$d = dir("/etc/php5"); 
if (!$d)
  die("cannot read directory");
echo "Handle: " . $d->handle . "\n";
echo "Path: " . $d->path . "\n";
while (false !== ($entry = $d->read())) {
   echo $entry."\n";
}
$d->close();

Also, the first sentence of the description for that example could be changed to something like:

"Please note the fashion in which the return value of $d->read() is checked in the example below."


Actual result:
--------------
Handle:
Path:

Fatal error: Call to a member function read() on a non-object in Command line code on line 4