Looked around web for possibilities to get PHP 5.3 running on SLES and found some posts mentining packages php53.
Installed php53, apache2-mod_php53, php53-mysql etc. from YAST on my webserver (default apache2 and mysql) running on SLES 11 SP2 for VMware.
At first everything worked fine and I moved two servers into production, but it seems that now we have found some problems.

Such code:

<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
	<input type="hidden" name="field[1]" />
	<input type="hidden" name="field[2]" />
	<input type="hidden" name="field[3]" />
	<input type="hidden" name="field[4]" />
	<input type="hidden" name="field[5]" />
	<input type="submit" name="submit" />
Should return
Array ( [field] => Array ( [1] => [2] => [3] => [4] => [5] => ) [submit] 
=> Submit Query )
Instead what we get is
Array ( [field] => Array ( [1] => ) [submit] => Submit Query )
Tested the code with default php packages (5.2.14) and everything works fine.
I don't have much experience and maybe i don't know some security setting for php53?