How can I save a PHP backtrace to the error log?

问题

I'm using this right now:

error_log(serialize(debug_backtrace()));

But I have to unserialize it every time. Is there a better way to store backtraces?

回答1:

This should generate a readable string:

error_log(print_r(debug_backtrace(), true));

Additionally, debug_print_backtrace() prints the back trace as string and its output can be captured with regular output buffer functions:

ob_start();
debug_print_backtrace();
error_log(ob_get_clean());

回答2:

From my perspective the best approach is using an exception functionality:

$e = new Exception();
$e->getTraceAsString();

回答3:

    $log = var_export(debug_backtrace(), true);

Then use the variable $log to log in file or what ever.

回答4:

A little ugly but workable, I do this:

 error_log('Identifying string so that it doesn\'t just end up as gibberish' . json_encode(debug_backtrace()));

回答5:

The following can either be written to a .txt file or you can also access it's contents (like $content[0]) as opposed to var_export which is a bit trickier I find:

    $content = unserialize(serialize(debug_backtrace()));

来源：https://stackoverflow.com/questions/8369275/how-can-i-save-a-php-backtrace-to-the-error-log