Hi,
unserialize() cannot unserialize objects whose names contain anything except
a-z, 0-9 and _, the parser allows those, though.

Example

$ cat unserialize.php
<?php
class Über { }

var_dump(unserialize(serialize(new Über())));
?>

Expected behaviour

$ php unserialize.php
object(über)(0) {
}

Actual behaviour

$ php unserialize.php
bool(false)
PHP Notice: unserialize(): Error at offset 5 of 15 bytes in
F:\Programme\cygwin\home\thekid\unserialize.php on line 4

Cause

http://cvs.php.net/diff.php/php-src/ext/standard/var_unserializer.re?sa=1&r1
=1.40&r2=1.41&ty=u

Fix

Allow anything the parser allows, [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*

• Timm