Description:
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I have had code that has been running with php5-dev versions since July, wich now won't parse anymore.

I had declared a CONST in a class wich I used in another CONST below it, this now gives a: 
Parse error: parse error, expecting `','' or `';'' in /home/blacky/public_html/php5-dev/zen/ext/types.class.php on line 127

I am using PHP 5 Beta 2 (currently not in the list)

Reproduce code:
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const NUMERIC		= '0-9';
const SPACE		= '\s';
const PUNCTUATION	= SPACE . '\.,;\:&"\'\?\!\(\)';
const ALPHA_LCASE	= 'a-z';
const E_ALPHA_LCASE	= ALPHA_LCASE . '??????????????????????';
const ALPHA_UCASE	= 'A-Z';
const E_ALPHA_UCASE	= ALPHA_UCASE . '??????????????????????';
const ALPHA		= ALPHA_LCASE . ALPHA_UCASE;
const E_ALPHA		= E_ALPHA_LCASE . E_ALPHA_UCASE;
const ALPHA_NUM		= ALPHA . NUMERIC;

Expected result:
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I expect the behaviour to be something like.

const FOO = 'foo';
const BAR = 'bar';
const FOOBAR = FOO . BAR;

and that an echo FOOBAR would give me the string 'foobar'

Actual result:
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Parse error: parse error, expecting `','' or `';'' in /home/blacky/public_html/php5-dev/zen/ext/types.class.php on line 127