ID: 25674 Updated by: [EMAIL PROTECTED] Reported By: lew at mailduct dot com -Status: Open +Status: Bogus Bug Type: Math related Operating System: FreeBSD 4.8-REL PHP Version: 4.3.3 New Comment:
Please do not submit the same bug more than once. An existing bug report already describes this very problem. Even if you feel that your issue is somewhat different, the resolution is likely to be the same. Because of this, we hope you add your comments to the existing bug instead. Thank you for your interest in PHP. See bug #20548 Previous Comments: ------------------------------------------------------------------------ [2003-09-26 15:38:34] lew at mailduct dot com Description: ------------ There is a gross inconsistency between how the increment and decrement operators function. If you increment an empty variable, the operations works correctly. However, if you *decrement* an empty variable, the operation leaves it unchanged! See for yourself, with my clear example... Reproduce code: --------------- <?php // Increment some blank/empty variables... $pos++; $pos++; $pos++; $neg--; $neg--; $neg--; // Show them to us now... print( "pos = $pos\n" ); print( "neg = $neg\n" ); // Now do it another way (forced typecast)... $ppp += 1; $ppp += 1; $ppp += 1; $nnn -= 1; $nnn -= 1; $nnn -= 1; // Show them to us now... print( "ppp = $ppp\n" ); print( "nnn = $nnn\n" ); # # Expected: # pos = 3 ppp = 3 # neg = -3 nnn = -3 # # Actual: # pos = 3 ppp = 3 # neg = nnn = -3 ?> Expected result: ---------------- # # Expected: # pos = 3 ppp = 3 # neg = -3 nnn = -3 Actual result: -------------- # # Actual: # pos = 3 ppp = 3 # neg = nnn = -3 (note that $neg-- fails!) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=25674&edit=1
