[ I have already sumitted this to the mailing list yesterday
  in an informal way. -- KK ]

Class definitions must be terminated with a ;. This is
confusing, since other blocks end themselves.

Code examples:

This works:

/home/schulung/www # cgi/php
<?php
for ($i=0; $i<10; $i++) { print $i; }
Content-type: text/html
 
0123456789print "x";
x
/home/schulung/www # 

But this breaks:

/home/schulung/www # cgi/php
<?php
class x {
        var $a, $b;
}
 
print "x";
Content-type: text/html
 
<br>
<b>Parse error</b>:  parse error, expecting `';'' in <b>-</b> on line
<b>6</b><br>