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PHP 8.5 FPM access log lines also go to STDERR #19989
Description
Description
We tested PHP 8.5 and noticed a change between alpha2 and beta2, which still exists in RC1: all lines going to a configured access log file in FPM also seems to get send to Apache as errors, so probably they are somehow also written to STDERR.
Example:
- custom FPM access log line:
::1 - 29/Sep/2025:11:52:53 +0200 "GET /status?json&full" 200 - 0.710 2048 0.00%
- unexpected line in Apache httpd error log file:
:1 - 29/Sep/2025:11:52:53 +0200 "GET /status?json&full" 200 - 0.710 2048 0.00%', referer http://myserver/status.html
Looking at FPM changes, this is likely due to the fix for issue #12302 in PR #18725 (Commit cfb3e98).
PHP Version
PHP 8.5.0RC1 (cli) (built: Sep 28 2025 09:40:27) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.5.0RC1, Copyright (c) Zend Technologies
with Zend OPcache v8.5.0RC1, Copyright (c), by Zend Technologies
Operating System
Linux RHEL 9
Reacted by V. D'AGOSTINO
Activity
Victor-D commentedon Oct 3, 2025
Hello
We also detected the same issue in
zlog_stream_init_internal()with PHP 8.5.0 RC1 on Debian systems running php-fpm with access logs direct writing (no syslog).Access logs are written in the php-fpm access log file, but also in the stderr, resulting being written in the Apache error logs.
This is a blocker for production release because it will generate too much logs :(
Fix phpGH-19989: PHP 8.5 FPM access log lines also go to STDERR
bukka commentedon Oct 10, 2025
I can confirm that this is a bug. Fix in #20123 .
Fix GH-19989: PHP 8.5 FPM access log lines also go to STDERR
Merge branch 'PHP-8.5'