First Local Commit - After Clean up.

Signed-off-by: Rick Hays <rhays@haysgang.com>

system/Debug/Timer.php

@@ -0,0 +1,184 @@
+<?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 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 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.
+ *
+ * NOTE: All methods are static since the class is intended
+ * to measure throughout an entire application's life cycle.
+ *
+ * @package CodeIgniter\Benchmark
+ */
+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);
+	}
+
+	//--------------------------------------------------------------------
+}