Bug #10770 Updated: . (concatenation) preceeds mathematical operations in order of execution

ID: 10770 Updated by: sniper Reported By: vitaliyf@gameaholic.com Old-Status: Open Status: Closed Bug Type: Feature/Change Request Operating system: PHP Version: 4.0.5 Assigned To: Comments: http://www.php.net/manual/en/language.operators.precedence.php . and - are equal. Use ()'s to override it. --Jani Previous Comments: --------------------------------------------------------------------------- [2001-05-09 19:21:33] vitaliyf@gameaholic.com <? $i=10; print "hello " . $i-2 . " world"; ?> will output: -2 world ("hello " . $i is evaluated into "hello 10", then 2 is subtracted (by casting "hello 10" into a 0, then subtracting 2). Then "world" is appened, thus giving us "-2 world") I think this might be way counter-intuitive to what should be happening: - (or all other operations) should be avaluated first, and concatenation last, producing "hello 8 world". Or how about this example, which definately can confuse some people: print "Hello is less than " . 1+strlen('hello') . " characters long."; Workaround: use () to arrange things to be executed in proper order but that might not be obvious for someone who doesn't know about this situation. PS: Thanks PartyZan for finding this. --------------------------------------------------------------------------- ATTENTION! Do NOT reply to this email! To reply, use the web interface found at http://bugs.php.net/?id=10770&edit=2