Filename of script that instantiates an object

Question

In PHP, is it possible to get the file name of the script that instantiated an object?

For example I have a script called file.php that creates a new instance of class Class. The class has an Error object that, when triggered, returns some error information. I would like to show that file.php triggered the error.

Answer 1

The function debug_backtrace() may be of use? It shows the execution flow from bottom to top.

Answer 2

Any chance that error_get_last's returned array satisfies your need? The function 'returns an associative array describing the last error with keys "type", "message", "file" and "line". Returns NULL if there hasn't been an error yet. '

http://www.php.net/manual/en/function.error-get-last.php

Answer 3

As Kai Sellgren said, the *debug_backtrace()* function can be used. You can also throw and catch an exception to get a backtrace.

try
{
    throw new Exception();
}
catch( Exception $e )
{
    print_r( $e->getTrace() );
}

As getting a backtrace can take some time, you should benchmark both solutions to see which is the fastest.

And by the way, shoudn't your error object be a subclass of Exception? That's the reason why exceptions exists...