PHP custom error handler log to output - php

Question

I have a script that will run on server daily to download data from a resource with no HTML output. By default PHP will output my script errors to php_error.log and to the output window in NetBeans.
I have created a user error handler:
// user defined error handling function
function userErrorHandler($errno, $errmsg, $filename, $linenum, $vars)
{
error_log($errmsg, 3, "logs/aem.log");
switch ($errno) {
case E_ERROR:
exit("Error grave $errmsg at $filename:$linenum");
break;
case E_USER_ERROR:
exit("Error grave $errmsg at $filename:$linenum");
break;
}
}
error_reporting(0);
set_error_handler('userErrorHandler');
I include this file in my main script and everything goes fine.
While I develop the app I would like to continue seeing the error messages on Output screen in Netbeans as well as keeping the error log files (as the default handler does). I have tried changing the value of error_reporting or adding additional error_log functions trying the following values:
error_reporting(E_ALL | E_STRICT);
error_reporting(-1);
error_log($errmsg, 0);`
But I never get the error on the output unless I remove include('mycustomhandler'); from the file.
How can I emulate the behavior of the standard error handler?

Answer 1

You should try to use output to stderr (I guess netbeans parses it). For example:
fprintf( STDERR, "Normal error message %s\n", "With nested info");
For logging errors you may use error_log() (maybe will handle output to netbeans too) or try to parse error_log from php.ini (ini_get()).
However I guess php uses internaly syslog(). So your error handler should look like:
// Logging
function userErrorHandler($errno, $errmsg, $filename, $linenum, $vars){
$logLevel = 0;
$label = '';
$exit = false;
switch( $errno){
case E_ERROR:
case E_USER_ERROR:
$label = 'Critical error';
$exit = true;
$logLevel = LOG_ERR;
break;
// ...
}
$message = "$label: on line ... file, error string...";
if( $logLevel){
syslog( $logLevel, $message);
}
if( !ini_get( 'display_error') && $exit){
die( 'Fatal error occured.');
}
if( $label){
echo $message; // You're responsible for how error is displayed
}
if( $exit){
die();
}
}
error_reporting( E_ALL);
Ask questions in comments if I didn't hit what you were asking