ID: 50111 Updated by: j...@php.net Reported By: datib...@php.net -Status: Open +Status: Bogus Bug Type: Streams related Operating System: Linux PHP Version: 5.2.11 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: ------------------------------------------------------------------------ [2009-11-08 23:27:05] datib...@php.net Test code changed to (added the unset() statement): $m0 = $m1 = $i = 0; $c = null; while ($i<5) { $m0 = memory_get_usage(); $c = stream_context_create(); unset($c); $m1 = memory_get_usage(); echo $m1-$m0,PHP_EOL; ++$i; } Output: 336 420 420 420 420 Though, as a language feature I would assume that in the second iteration the memory occupied by the previous assignment would be freed implicitly. Is that a wrong assumption? ------------------------------------------------------------------------ [2009-11-08 21:17:53] srina...@php.net hmmm.. not sure, why u think there is a leak. when u write this below code $c = stream_context_create(); u do understand that underlying php engine need to do some processing underneath and store the reference of this processing in $c variable. this does require some memory consumption. i guess, if u do some thing like and still no $c = stream_context_create.. unset($c); $m1 = memory_get_usage(); and still see memory leak , then let us know.. ------------------------------------------------------------------------ [2009-11-08 01:06:54] datib...@php.net Code to reproduce can be made simpler, since the problem seems to be with stream_context_create(): $m0 = $m1 = $i = 0; $c = null; while ($i<5) { $m0 = memory_get_usage(); $c = stream_context_create(); $m1 = memory_get_usage(); echo $m1-$m0,PHP_EOL; ++$i; } ------------------------------------------------------------------------ [2009-11-07 09:26:05] datib...@php.net Description: ------------ When stream_context_create() is used in conjunction with file_get_contents() or other stream related functions that accept a context parameter, memory is being leaked. Reproduce code: --------------- for ($i=0;$i<5;++$i){ $m0 = memory_get_usage(); file_get_contents('http://www.google.com', false, stream_context_create(array())); $m1 = memory_get_usage(); echo $m1-$m0,PHP_EOL; } Expected result: ---------------- X (where X is the memory increase for the first iterator) 0 0 0 0 Actual result: -------------- X (where X is the memory increase for the first iterator) 384 (or something similar) 420 420 480 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50111&edit=1
