PHP Debug Log program execution time and execution status

/** * debuging (' dtrace '); View Call stack * debuging ($var); Print $var (var_dump) * debuging ($var, ' php '); Print $var (var_export) * debuging ($var, $echo, 2); Output $var * debuging (__line__.__class) in JSON format;//often used in large if statement body positioning, or to find the program end point */function debuging ($var = ", $echo =", $die = f  Alse, $force = False) {static $clear;    if (0 && $clear = = = = null) {Ob_end_flush ();  $clear = true;  } static $d;    if (0 && empty ($d)) {$d = 1;  Debuging (' DTrace ');  } $force && $_get [' debug '] = 1;    if (Isset ($_get [' debug])) {if (' dtrace ' = = = = $var) {dtrace ($die);      } elseif ($die = = = 2) {header (' Content-type:application/json ');    echo Json_encode ($var); } else {echo '
\ n ";      if ($echo) {        echo "$echo:";      }      if ($echo = = = ' php ')        var_export ($var);      else        var_dump ($var);      echo "
\ n ";  } $die && die ();    }}function DTrace ($die = False) {try {static $lastTime;    $lastTime or $lastTime = $_server [' Request_time '];  throw new Exception ();    } catch (Exception $e) {$currTime = Microtime (true);    $totalTime = $currTime-$_server [' request_time '];    $execTime = $currTime-$lastTime;    $lastTime = $currTime;    echo "\ n"; echo "Exectime: $execTime S.
\ n "; echo "TotalTime: $totalTime S.
\ n "; echo "Trace:
\ n ";    echo $e->gettraceasstring ();    Debug_print_backtrace (); $die && die;  Debuging ($e->gettraceasstring (), ' php ', $die); }}for ($i =0; $i <100000; $i + +) {$a + = $i;} DTrace ();

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