Bug #64404 [Com]: assert(true) increases memory_get_usage()

Edit report at https://bugs.php.net/bug.php?id=64404&edit=1 ID: 64404 Comment by: zeusgerde at arcor dot de Reported by: zeusgerde at arcor dot de Summary: assert(true) increases memory_get_usage() Status: Not a bug Type: Bug Package: *General Issues Operating System: Windows 7 PHP Version: 5.4.12 Block user comment: N Private report: N New Comment: I guess the same goes for this? The string 'true' is a new variable, that is not freed? <?php echo "assert(true)\r\n"; echo memory_get_usage(), "\r\n"; // 124448 assert(true); echo memory_get_usage(), "\r\n"; // 124448 echo "assert('true')\r\n"; echo memory_get_usage(), "\r\n"; // 124448 assert('true'); echo memory_get_usage(), "\r\n"; // 124640 > 124448 Previous Comments: ------------------------------------------------------------------------ [2013-03-11 14:48:06] nikic@php.net The memory usage is increased not due to the assert(true) call, but because of the variables used to store the memory usage. If you do something like this the memory usage will not change: var_dump(memory_get_usage()); assert(true); var_dump(memory_get_usage()); ------------------------------------------------------------------------ [2013-03-11 12:19:26] zeusgerde at arcor dot de Description: ------------ assert(true) increases memory_get_usage() Test script: --------------- <?php error_reporting(E_ALL | E_STRICT); ini_set('display_errors', 1); echo phpversion(), "\r\n"; $oldMemUsage = memory_get_usage(); assert(true); $newMemUsage = memory_get_usage(); assert('$oldMemUsage == $newMemUsage'); echo 'OK'; Expected result: ---------------- 5.4.12 OK Actual result: -------------- 5.4.12 Warning: assert(): Assertion "$oldMemUsage == $newMemUsage" failed in D:\bar.php on line 10 OK ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64404&edit=1