note 54993 added to function.debug-backtrace

I use this for debugging in my object oriented systems. It allows me to output a debug/error/warning function with exact information about the location that the error was thrown, which is useful. Check it: <?php abstract class Debugger { /** * Throw a debug message. */ abstract function debug($msg); /** * Throw an error message. */ abstract function error($msg); /** * Throw a warning message. */ abstract function warning($msg); /** * Wrap a message with information about class, function, file and line * number and return it. */ protected function getMsg($msg) { $bt = debug_backtrace(); // get class, function called by caller of caller of caller $class = $bt[2]['class']; $function = $bt[2]['function']; // get file, line where call to caller of caller was made $file = $bt[1]['file']; $line = $bt[1]['line']; // build & return the message return "$class::$function: $msg in $file at $line"; } } ?> Implement different debuggers for different scenarios (development, testing, production). Each debugger extends Debugger; each of its methods (debug/error/warning) calls $this->getMsg($msg) to get a message with class, function, file, and line information. Then it can either log it, email it, die with it, etc. Then, just give each object (perhaps using a common superclass Object) a concrete debugger. Then, from any object method, do something like: <?php class Foo extends Object { function bar() { $this->debugger->error("This is an error"); } } ?> Which produces something like: Foo::bar: This is an error in /some/file at X ---- Manual Page -- http://www.php.net/manual/en/function.debug-backtrace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+54993 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+54993&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+54993&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+54993&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+54993&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+54993&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+54993&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+54993&report=yes Search -- http://master.php.net/manage/user-notes.php