Located in file /wire/core/Debug.php

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Common

NameReturnSummary 
Debug::backtrace()
array stringReturn a backtrace array that is simpler and more PW-specific relative to PHP’s debug_backtrace 
Debug::getAll()
arrayGet all active timers in array with timer name (key) and start time (value) 
Debug::getSavedTimer(string $key)
stringReturn the time recorded in the saved timer $key 
Debug::getSavedTimers()
arrayReturn all saved timers in associative array indexed by key 
Debug::removeAll()
(nothing)Remove all active timers 
Debug::removeTimer(string $key)
(nothing)Remove a timer completely 
Debug::resetTimer(string $key)
string intReset a timer so that it starts timing again from right now 
Debug::saveTimer(string $key)
bool stringSave the current time of the given timer which can be later retrieved with getSavedTimer($key) 
Debug::startTimer()
stringStart a new timer 
Debug::stopTimer()
stringGet elapsed time for given timer and stop 
Debug::timer()
string intMeasure time between two events 
Debug::timerSetting(string $key)
mixedGet or set timer setting 

API reference based on ProcessWire core version 3.0.200

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