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Bugs for Performance problem
ID# Date Last Modified Type Status PHP Version OS Summary Assigned
27275
(edit)		 2004-02-16 07:38 UTC 2004-03-15 10:12 UTC Bug Closed 5CVS-2004-02-16 (4CVS) * Array->String cast takes serious performance hit, leaks like crazy  
27758
(edit)		 2004-03-29 15:05 UTC 2004-06-03 12:00 UTC Bug Closed 5CVS-2004-03-29 (dev) Windows 2000 SP4 High memory usage/leak  
28866
(edit)		 2004-06-21 13:15 UTC 2005-02-15 11:30 UTC Bug Closed 5.0.0RC3 Linux 2.4 / glibc 2.3 array of objs filling slowness  
29255
(edit)		 2004-07-19 12:03 UTC 2005-02-17 13:03 UTC Bug Closed 5.0.0 Windows 2000 Stat much slower on network files in PHP5  
30295
(edit)		 2004-09-30 23:23 UTC 2006-01-01 21:54 UTC Bug Closed 5CVS, 4CVS (2005-06-20) * array_key_exists() makes a copy of the given array  
31332
(edit)		 2004-12-29 12:30 UTC 2005-01-16 09:51 UTC Bug Closed 4CVS, 5CVS (2005-01-04) * unserialize() works terribly slow on huge strings compared to 4.3.9  
31515
(edit)		 2005-01-12 13:48 UTC 2005-02-22 01:24 UTC Bug Closed 5.0.3 Linux 2.4.28 (Gentoo) scandir() is slower than user-function  
35054
(edit)		 2005-11-01 18:41 UTC 2005-11-01 23:13 UTC Bug Closed 4.4.1RC1 Linux Heavy "Random" Lag During foreach loop  
35658
(edit)		 2005-12-13 12:57 UTC 2005-12-13 13:44 UTC Bug Closed 5.1.1 Windows XP date function slower than in 5.0.5  
38812
(edit)		 2006-09-13 15:58 UTC 2006-09-20 00:29 UTC Bug Closed 5CVS-2006-09-13 (snap) Linux (SuSE 9.2) array_key_exists is ~200x slower than 5.1.x  
44160
(edit)		 2008-02-18 19:45 UTC 2009-09-21 20:08 UTC Bug Closed 5.2.5 Windows Server 2003 Windows Scheduled Task Hangs when using php-win.exe  
45042
(edit)		 2008-05-19 22:13 UTC 2008-05-26 20:17 UTC Bug Closed 5.2.6 Vista (any version) Vista & mySQL Extension = slowdown when PHP finalizes  
45942
(edit)		 2008-08-28 17:36 UTC 2008-09-03 21:05 UTC Bug Closed 5.2.6 Fedora Core 6 D_FILE_OFFSET_BITS=64 causes PHP to run at half speed  
46102
(edit)		 2008-09-17 04:17 UTC 2008-10-31 15:55 UTC Bug Closed 5.2.6 Windows XP getenv() memory leak  
50086
(edit)		 2009-11-05 09:11 UTC 2009-11-05 10:39 UTC Bug Closed 6SVN-2009-11-05 (SVN) Solaris 5.10 (SPARC) [PATCH] - Avoid invoking setitimer when timeouts have been disabled  
81090
(edit)		 2021-05-30 12:41 UTC 2021-05-31 10:17 UTC Bug Closed 7.4.19 Windows Typed property performance degradation with .= operator  
79856
(edit)		 2020-07-14 07:36 UTC 2020-07-14 07:40 UTC Bug Closed 8.0.0alpha2 Windows 10 Pro for() terribly poor performance beberlei
65410
(edit)		 2013-08-07 08:27 UTC 2015-04-15 14:00 UTC Req Closed 5.5.1 All Add call_func() syntax cmb
73425
(edit)		 2016-10-31 05:34 UTC 2021-08-19 13:35 UTC Req Closed 7.0.12   get_headers() and default GET requests cmb
76099
(edit)		 2018-03-15 08:59 UTC 2018-06-25 00:24 UTC Bug Closed 7.2.3 windows 7 64bit HTML <select> tag request problem at PHP server side cmb
79008
(edit)		 2019-12-20 15:23 UTC 2019-12-20 15:23 UTC Bug Closed 7.4Git-2019-12-20 (Git) Windows General performance regression with PHP 7.4 on Windows cmb
79896
(edit)		 2020-07-25 06:17 UTC 2020-07-31 06:39 UTC Bug Closed 7.4.8 Windows Server 2016 slower processing of non-fatal errors using custom error handler (7.4.7+) cmb
80061
(edit)		 2020-09-04 16:29 UTC 2020-09-21 14:11 UTC Bug Closed 7.4Git-2020-09-04 (Git) * Copying large files may have suboptimal performance cmb
40002
(edit)		 2007-01-02 19:47 UTC 2007-01-09 15:07 UTC Bug Closed 5.2.0 Windows XP 32bit Try/Catch performs poorly dmitry
40261
(edit)		 2007-01-28 00:30 UTC 2007-03-20 07:14 UTC Bug Closed 5.2.0 All Extremely slow data handling due to memory fragmentation dmitry
40809
(edit)		 2007-03-14 23:51 UTC 2007-03-20 06:48 UTC Bug Closed 5.2.1 Linux Poor perfomance of ".=" dmitry
41713
(edit)		 2007-06-16 16:48 UTC 2007-07-25 11:15 UTC Bug Closed 5.2CVS-2007-07-12 win32 only Persistent memory consumption since 5.2 dmitry
44069
(edit)		 2008-02-07 13:39 UTC 2008-02-14 15:20 UTC Bug Closed 5.2.5 * Huge memory usage with concatenation using . instead of .= dmitry
50486
(edit)		 2009-12-16 01:30 UTC 2020-03-04 14:45 UTC Req Closed 5.3SVN-2009-12-16 (SVN) Solaris 10 [PATCH] optimization for safe_address on exotic platforms dmitry
50894
(edit)		 2010-02-01 06:13 UTC 2015-04-06 15:42 UTC Req Closed 5.*, 6 * no-op cast triggers copy-on-write (ternary operator triggers copy too) dmitry
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