pgleadershipbook
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pgleadershipbook / trunk / system / Debug / Timer.php
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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014-2019 British Columbia Institute of Technology * Copyright (c) 2019-2020 CodeIgniter Foundation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author CodeIgniter Dev Team * @copyright 2019-2020 CodeIgniter Foundation * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 4.0.0 * @filesource */ namespace CodeIgniter\Debug; /** * Class Timer * * Provides a simple way to measure the amount of time * that elapses between two points. * * @package CodeIgniter\Debug */ class Timer { /** * List of all timers. * * @var array */ protected $timers = []; //-------------------------------------------------------------------- /** * Starts a timer running. * * Multiple calls can be made to this method so that several * execution points can be measured. * * @param string $name The name of this timer. * @param float $time Allows user to provide time. * * @return Timer */ public function start(string $name, float $time = null) { $this->timers[strtolower($name)] = [ 'start' => ! empty($time) ? $time : microtime(true), 'end' => null, ]; return $this; } //-------------------------------------------------------------------- /** * Stops a running timer. * * If the timer is not stopped before the timers() method is called, * it will be automatically stopped at that point. * * @param string $name The name of this timer. * * @return Timer */ public function stop(string $name) { $name = strtolower($name); if (empty($this->timers[$name])) { throw new \RuntimeException('Cannot stop timer: invalid name given.'); } $this->timers[$name]['end'] = microtime(true); return $this; } //-------------------------------------------------------------------- /** * Returns the duration of a recorded timer. * * @param string $name The name of the timer. * @param integer $decimals Number of decimal places. * * @return null|float Returns null if timer exists by that name. * Returns a float representing the number of * seconds elapsed while that timer was running. */ public function getElapsedTime(string $name, int $decimals = 4) { $name = strtolower($name); if (empty($this->timers[$name])) { return null; } $timer = $this->timers[$name]; if (empty($timer['end'])) { $timer['end'] = microtime(true); } return (float) number_format($timer['end'] - $timer['start'], $decimals); } //-------------------------------------------------------------------- /** * Returns the array of timers, with the duration pre-calculated for you. * * @param integer $decimals Number of decimal places * * @return array */ public function getTimers(int $decimals = 4): array { $timers = $this->timers; foreach ($timers as &$timer) { if (empty($timer['end'])) { $timer['end'] = microtime(true); } $timer['duration'] = (float) number_format($timer['end'] - $timer['start'], $decimals); } return $timers; } //-------------------------------------------------------------------- /** * Checks whether or not a timer with the specified name exists. * * @param string $name * * @return boolean */ public function has(string $name): bool { return array_key_exists(strtolower($name), $this->timers); } //-------------------------------------------------------------------- } |
Commits for pgleadershipbook/trunk/system/Debug/Timer.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Thu 04 Feb, 2021 09:33:04 +0000 | PG Leadership book initial commit |