note 56332 added to function.unset

In addition to what timo dot hummel at 4fb dot de said; >For the curious: unset also frees memory of the variable used. > >It might be possible that the in-memory size of the PHP Interpreter isn't reduced, but your >scripts won't touch the memory_limit boundary. Memory is reused if you declare new variables. It might be worth adding that functions apparently don't free up memory on exit the same way unset does.. Maybe this is common knowledge, but although functions destroys variables on exit, it (apparently) doesn't help the memory. So if you use huge variables inside functions, be sure to unset them if you can before returning from the function. In my case, if I did not unset before return, then the script would use 20 MB more of memory than if I did unset. This was tested with php 5.0.4 on apache 2 on windows xp, with no memory limit. Before I did the test, I was under the impression that when you exit from functions, the memory used inside it would be cleared and reused. Maybe this should be made clear in the manual, for either unset() or in the chapter for functions. ---- Manual Page -- http://www.php.net/manual/en/function.unset.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+56332 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56332&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56332&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56332&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56332&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56332&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56332&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+56332&report=yes Search -- http://master.php.net/manage/user-notes.php