From: james at gogo dot co dot nz Operating system: Linux PHP version: 4.3.4 PHP Bug Type: Documentation problem Bug description: Precedence of + - . incorrect in docs.
Description: ------------ In http://www.php.net/manual/en/language.operators.php the relative precedence of + - and . is listed as '+ - .' indicating that + and - operations should happen before . operations. However the code here shows that concatenation happens first. Personally I would prefer that concatenation happened last as in the docs as it would be much more sensible (you hardly ever want to use + - on a result of a concatenation, but often want to use the result of a + - in a concatenation), but that's obviously too big a change now. Reproduce code: --------------- echo 'Foo' . 5 - 5; echo "\n"; echo 'Foo' . 5 + 5; Expected result: ---------------- I expect to get the following --- Foo0 Foo10 --- (+ and - happen first, then concatenation, as according to documentation) Actual result: -------------- The result you get is --- 0 5 --- (. happens first, then the resulting string is evaluated as int producing 0 which is combined with the next operator and value to produce the result). -- Edit bug report at http://bugs.php.net/?id=28760&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28760&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28760&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=28760&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=28760&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=28760&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=28760&r=needscript Try newer version: http://bugs.php.net/fix.php?id=28760&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=28760&r=support Expected behavior: http://bugs.php.net/fix.php?id=28760&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=28760&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=28760&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=28760&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28760&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=28760&r=dst IIS Stability: http://bugs.php.net/fix.php?id=28760&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=28760&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=28760&r=float
