Req #67374 [Opn->Csd]: Integer Overflow in Memory Usage Functions

Edit report at https://bugs.php.net/bug.php?id=67374&edit=1 ID: 67374 Updated by: nikic@php.net Reported by: johannesdahse at gmx dot de Summary: Integer Overflow in Memory Usage Functions -Status: Open +Status: Closed Type: Feature/Change Request Package: PHP options/info functions PHP Version: 5.5.13 -Assigned To: +Assigned To: nikic Block user comment: N Private report: N New Comment: PHP 7 supports 64bit integers on LLP64 platforms. Of course you'll still get an overflow on 32bit builds, but there isn't much we can do about that. Previous Comments: ------------------------------------------------------------------------ [2015-11-05 09:01:27] samuel dot chemla at orange dot com By the way this shoud be a bug, not a feature request... ------------------------------------------------------------------------ [2015-11-05 08:41:04] samuel dot chemla at orange dot com Hi, any new on this ? memory_get_peak_usage() should return an int, which should be 64bit on 64bit systems, but it appears to be 32bit. Any reason why ? NB: I'm on PHP 5.5.30 x64 build on Windows 7 x64 ------------------------------------------------------------------------ [2014-08-26 12:19:36] arie_dejong at msn dot com You can increase the limit by using the negative integer. $bytes = memory_get_peak_usage(); if($bytes < 0){ $bytes = PHP_INT_MAX + ($bytes - ~PHP_INT_MAX); } ------------------------------------------------------------------------ [2014-07-05 23:18:03] yohgaki@php.net I don't use windows often. AFAIK, int is 32bit under windows regardless of architecture. Therefore, overflow is spec. Is there any clean/feasible solution? Anyone? ------------------------------------------------------------------------ [2014-06-03 14:42:37] johannesdahse at gmx dot de Description: ------------ The memory usage functions memory_get_usage() and memory_get_peak_usage() are limited by INTEGER and can only store the memory usage of 2.147 GB. This results in false reports for higher memory usage. Tested on Windows 7 64bit, PHP 5.5.13 (64bit and 32bit version). Test script: --------------- ini_set("memory_limit", "3G"); $a = array(); for($i=0; $i<22; $i++) $a[$i] = str_repeat("A", 100000000); echo memory_get_peak_usage(); Expected result: ---------------- 2200227928 Actual result: -------------- -2094739216 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67374&edit=1