Req #67455 [Opn->Wfx]: Allow dynamic expression for const

Edit report at https://bugs.php.net/bug.php?id=67455&edit=1 ID: 67455 Updated by: johannes@php.net Reported by: hacksmw at naver dot com Summary: Allow dynamic expression for const -Status: Open +Status: Wont fix Type: Feature/Change Request Package: *General Issues PHP Version: 5.6.0beta4 Block user comment: N Private report: N New Comment: This won't be added as it is hard to tell the user when exactly this will be evaluated (during compilation phase? Then this might require not yet compiled things or trigger an autoloader; after compilation of the file? - might miss thins from other files not executed, yet; when execution passes the statement? - might be a wild jump,hard to debug; on first use? - Even more confusing) Previous Comments: ------------------------------------------------------------------------ [2014-06-16 17:15:28] hacksmw at naver dot com Description: ------------ In PHP 5.6, const supports static expression. But it still does not support dynamic expression. So please implement the ability to use dynamic expressions when using const. I think that const should replace define() entirely. const is much more readable and natural than define(). Test script: --------------- <?php const PI = atan(1)*4; const RANDOM = rand(); echo PI . "\n"; echo RANDOM . "\n"; Expected result: ---------------- 3.141592653589793 445 Actual result: -------------- Parse error: syntax error, unexpected '(', expecting ',' or ';' in C:\Users\hack s_000\Desktop\test.php on line 2 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67455&edit=1