Re: Re: Optional parameter for debug_print_backtrace()

On Fri, Mar 19, 2004 at 10:00:16AM +0100, Andrey Hristov wrote: > Hmmm, > looks I was kinda fooled by some script a month ago. I was suprised that > with debug_print_backtrace() I was able to see the arguments of the stack > since I haven't seen the same done by debug_backtrace(). But few minutes > ago I took a look at the code of both functions and they try to extract the > arguments from the stack. So this optional parameter to > debug_print_backtrace() is not needed. > But a question arose, in which cases the arguments from the stack will be > extracted and returned?(hope this won't be treated as php-general question > ;) ) I tried to simulate something with a small script with no success. > > > Andrey Seems behaviour changed from PHP4 to PHP5. et@edea:~$ php -r 'function f() { var_dump(array_keys(array_shift(debug_backtrace()))); } f(1,3);' array(4) { [0]=> string(4) "file" [1]=> string(4) "line" [2]=> string(8) "function" [3]=> string(4) "args" } et@edea:~$ php5 -r 'function f() { var_dump(array_keys(array_shift(debug_backtrace()))); } f(1,3);' array(3) { [0]=> string(4) "file" [1]=> string(4) "line" [2]=> string(8) "function" } Note that if you join() the result of array_keys the args argument disappears in php4 as well... This is not mentioned in the changelog, afaik. Maybe it should be? -- Regards, Stefan Walk <swalk@prp.physik.tu-darmstadt.de>