Question

Is it possible within a PHP script to start a trace log and activate a debugging log.
I am not looking for eclipse + xdebug, but something like this use-case:
When script starts, it checks if $_GET["debugme"] is set. If yes, say start_trace_log().
Anything that happens after that in the rest of the script, should be logged, e.g.

scriptA.php :10 include("anotherscript.php")

anotherscript.php:1 foo()

…

At the moment, I have to manually do this for any script that i am interested to log and everywhere the script has to check $_GET["debugme"] instead of simply debugging ALL within this script run. Very uncomfortable for ocassionally checking scripts.

Any better ideas or comfortable ways of tracing php scripts from a start point to the last line?

Answer 1

Add this line to the end of the end or footer script:
if(isset($_GET["debugme"]))debug_print_backtrace();
that will print details like #… function-name() called at script-path.php:linenumber.

Don’t forget to estrict the debugme feature to run on development system only!