Errors not being logged to php_errors.log as defined in php.ini (IIS)

PHPMaker General Discussion (PHPMaker)
1

If I call a php file not related to the PHP Maker project with a deliberate error in code like:

$ii = bogusFunction(); //this function is not defined

…the error is logged to the php_errors.log. This shows that php.ini in my webserver is correctly set to log errors.

In the exact same webserver, If I put that piece of code somewhere it a PHP file belonging to the project (like inside a rowRendering function), the error is shown (if in development environment), or I get a generic error (in production environment). Either way, nothing gets logged to php_errors.log. No matter if debug is enabled or disabled.

I know there are other error logging options like the “Log error to file” advanced setting, but I specifically need PHP errors to be logged to the standard file regardless.

I’m using the latest PHP 8.1 in IIS and the latest v2025. Help appreciated.

2

PHPMaker uses the popular Monolog as logger, you may change the definition of the logger by Container_Build server event, e.g. (v2025)

function Container_Build(ContainerBuilder $builder): void{
    $builder->addDefinitions([
        'app.logger' => \DI\factory(function (\Psr\Container\ContainerInterface $c) {
            $logger = new \Monolog\Logger('log');

            // Original file handler
            // Note: Update the log folder, by default it is 'log/log.log' where 'log/' is the log path you set in your project
            $fileHandler = new \Monolog\Handler\RotatingFileHandler('path/to/log.log');
            $logger->pushHandler($fileHandler);

            // Add your additional handler, e.g.
            $errorHandler = new \Monolog\Handler\ErrorLogHandler(\Monolog\Handler\ErrorLogHandler::OPERATING_SYSTEM);
            $logger->pushHandler($errorHandler);

            return $logger;
        }),
    ]);
}
3

That works, thanks a lot!
However, I’d like to lower the loglevel in production, as logging all the debugging messages (SQL queries and such) bloats the logfiles too much.
I tried lowering the loglevel to WARNING, but I’m still getting debug messages logged:

    $builder->addDefinitions([
        'app.logger' => \DI\factory(function (\Psr\Container\ContainerInterface $c) {
            $logger = new \Monolog\Logger('log');

            // Original file handler
            // Note: Update the log folder, by default it is 'log/log.log' where 'log/' is the log path you set in your project
            $fileHandler = new \Monolog\Handler\RotatingFileHandler(ServerVar('error_log'), \Monolog\Logger::WARNING);
            $logger->pushHandler($fileHandler);

            // Add your additional handler, e.g.
            $errorHandler = new \Monolog\Handler\ErrorLogHandler(\Monolog\Handler\ErrorLogHandler::OPERATING_SYSTEM);
            $logger->pushHandler($errorHandler);

            return $logger;
        }),
    ]);

How do I do it correctly?

4

Please disregard previous message. I figured it out: “\Monolog\Logger::WARNING” goes also in the ErrorLogHandler call.

5

How do I just keep the PHP Maker original logs (rotating log file in log folder), but lower the loglevel in production (and debug disabled) to WARNING? I can’t find a way to do that.

6

The signature of RotatingFileHandler is:

public function __construct(string $filename, int $maxFiles = 0, int|string|Level $level = Level::Debug, ...)
7

Thanks for the clarification.

My whole objective was to have some level of error logging in production, as monolog by default disables logging to php_errors.log (as defined in php.ini).
In the end, I opted to keep the original log location and handler. I just lower the level when not in debug:

    //Reduce logging level when not in debug. "Log error and SQL to file" advanced setting must be enabled
    if (!IsDebug()) $builder->addDefinitions([
        'app.logger' => \DI\factory(function (\Psr\Container\ContainerInterface $c) {
            $logger = new \Monolog\Logger('log');
            // Note: Update the log level, by default it is DEBUG.
            // Levels: DEBUG, INFO, NOTICE, WARNING, ERROR, CRITICAL, ALERT, EMERGENCY
            $fileHandler = new \Monolog\Handler\RotatingFileHandler('log/log.log', 0, \Monolog\Logger::WARNING);
            $logger->pushHandler($fileHandler);
            return $logger;
        }),
    ]);