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[2005-01-05 19:12 UTC] php at mfoxx dot myspamkiller dot com
Description:
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FYI: I am running a server where I built from source the apache and PHP binaries, so I am not susceptible to the problems other bugs reported where they might have used a pre-packaged binary with some other unexplained behavior.
If I set a value for error_log in my php.ini (to /home/php.errors, for instance), PHP correctly logs any errors encountered (in ANY of my <virtualhost> sites) there to that single file.
However, when I do in a script (because error_log is said in the manual to be modifiable as PHP_INI_ALL, which means i can change it anywhere):
ini_set("error_log","/path/to/some.log.file");
or when I do:
php_value error_log "/path/to/some.log.file"
in my httpd.conf inside a <virtualhost>, or my .htaccess file for a particular site, the VALUE is apparently "changed", but PHP doesn't seem to respect it, when coming across an error later in code. Furthermore, PHP will not even write the errors to the original error_log value set before in the php.ini. It will instead write them to apache's error log for that particular <virtualhost>.
As you can see in my "reproduce code" i change the error_log variable using ini_set(), then i do phpinfo(), and verify that it DOES IN FACT have the new changed value in its output, overriding the default that I set in my php.ini file. And then I call a function which doesn't exist, which should force a PHP error.
The error does occur, and it DOES get logged, just not to the right file, it now gets logged to the APACHE error log file, not even the original php.ini error_log setting, which I find very strange.
Reproduce code:
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<?php
ini_set("error_log","/path/to/php.err");
phpinfo();
echo nonexistent();
?>
Expected result:
----------------
I expected for the value of error_log to be changed, so that when I force a PHP error, calling a "nonexistent()" function, I should get the error logged into my php.err file as specified in ini.set.
Actual result:
--------------
the error (call to undefined function) DOES get logged, but to the wrong file... it gets logged to the Apache error file for that particular <virtualhost>. It doesn't even get logged to the original php.ini file's setting for error_log.
But, as I stated before, if I just set the value in php.ini, and DON'T try to modify it in code (or httpd.conf), then the error gets logged to the location I specified in php.ini.
So, basically, when you try to modify the error_log setting at runtime, it irreversibly starts the PHP error logging to the Apache error log, no matter what you specify.
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Last updated: Fri Oct 31 03:00:01 2025 UTC |
I just upgraded to the latest Apache 2.0.54, and PHP 5.0.4, and again, I am still having the same problem. I go into my php.ini file, and I comment out the setting for the php error_log. I then create a script like this: <?php ini_set("error_log","/path/to/logs/php-err.txt"); phpinfo(); nonexistent(); ?> When I examine the output of phpinfo(), i see the value set in the ini_set() call. However, the error that occurs when I call the nonexistent() function does NOT get logged to that file (nor does the file even get created). It however does get logged to the virtual-host specific apache error log (error.log) that is set to be in the same directory. I even tried creating an empty file (thinking maybe it was the creation of the file that wasn't working) in the logs directory, and then restarting apache. Reran the script, and still, the error gets logged to the apache log for that virtual-host, not to the value set by ini_set().Also, here is the VirutalHost directive from httpd.conf: <VirtualHost xxx.xxx.xxx.xxx> ServerAdmin xxx@xxx.com DocumentRoot /www/xxx ServerName www.xxx.com ErrorLog /www/logs/xxx_com-error.log CustomLog /www/logs/xxx_com-access.log common </VirtualHost> The apache error log I keep referring to, that is getting the PHP errors logged to it, is the one specified above at "ErrorLog", xxx_com-error.log.