php - Concatenation in constant-definition -

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php - Concatenation in constant-definition -

i'm trying create little enum , i'm stuck: why doesn't work?

class.layoutparts.php:

<?php class layoutparts { const main = 1; const footer = 2; } ?>

class.supportedlayouts.php:

<?php class supportedlayouts { const main = layoutparts::main; const main_footer = layoutparts::main.layoutparts::footer; } ?>

it results next message:

parse error: syntax error, unexpected '.', expecting ',' or ';' in /*****/class.supportedlayouts.php on line 4

thanks help!

regards, flo

. operator, making layoutparts::main.layoutparts::footer; statement, isn't allowed in const or property declaration.

see here

the value must constant expression, not (for example) variable, property, result of mathematical operation, or function call.

php const concatenation

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