Appending to logged PHP error messages

[thing2b]

I log all error messages to a log file with the following code:

 // Error logging
    ini_set( 'log_errors', 1 );
    ini_set( 'display_errors', 0 );
    ini_set( 'error_log', LOG_DIR . '/Log - PHP Errors.txt' );
    ini_set('ignore_repeated_errors',0);

The problem with this is that the same PHP script is used for more than one site and it is hard to track does the source of the errors. Can anyone suggest a method of appending a string to each logged message so that extra information can be included into the log entry?

I am aware that I could use the following code to split it into a log file per site:

 ini_set('error_log', LOG_DIR.'/'.$_SERVER['HTTP_HOST'].'/Log - PHP Errors.txt' );

but I would like to also append extra information such as the Referer, IP and some other variables to the message that will help me recreate the error conditions.

[digiweb]

Not sure I follow you - have different instances of the script write to different logs, one per site. MUCH better than trying to parse concatenated information to figure out the same info but for different sites in the same log.

[exam]

I totally agree with Caroline. The following will write a different log file for each domain.

PHP Code:

ini_set( 'error_log', LOG_DIR . '/Log - PHP Errors '.$_SERVER['SERVER_NAME'].' .txt' );