#40860 [Opn->Bgs]: increment operator works different than plus operator

ID: 40860 Updated by: tony2001@php.net Reported By: tjerk dot meesters at muvee dot com -Status: Open +Status: Bogus Bug Type: *General Issues Operating System: Linux 2.6 PHP Version: 5.2.1 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Previous Comments: ------------------------------------------------------------------------ [2007-03-20 07:30:07] tjerk dot meesters at muvee dot com Description: ------------ Applying the increment operator (++) on a variable (containing a number) ending with a newline character doesn't change the variable. However, applying += 1 to the same variable does result in the right behaviour. Reproduce code: --------------- function showsucc($x) { // using increment operator $tmp = $x; $tmp++; echo "successor of $x = ",$tmp,"\n"; // using plus operator $tmp = $x; $tmp += 1; echo "result of $x + 1 = ",$tmp,"\n"; } showsucc("123\n"); showsucc("123"); Expected result: ---------------- successor of 123 = 124 result of 123 + 1 = 124 successor of 123 = 124 result of 123 +1 = 124 Actual result: -------------- successor of 123 = 123 <---- difference is here result of 123 + 1 = 124 successor of 123 = 124 result of 123 + 1 = 124 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40860&edit=1