5 * Copyright (c) 2010, Sebastian Bergmann <sb@sebastian-bergmann.de>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * * Neither the name of Sebastian Bergmann nor the names of his
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
28 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
34 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
39 * @author Sebastian Bergmann <sb@sebastian-bergmann.de>
40 * @copyright 2010 Sebastian Bergmann <sb@sebastian-bergmann.de>
41 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
42 * @link http://github.com/sebastianbergmann/php-timer
43 * @since File available since Release 1.0.0
47 * Utility class for timing.
51 * @author Sebastian Bergmann <sb@sebastian-bergmann.de>
52 * @copyright 2002-2010 Sebastian Bergmann <sb@sebastian-bergmann.de>
53 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
54 * @version Release: 1.0.0
55 * @link http://github.com/sebastianbergmann/php-timer
56 * @since Class available since Release 1.0.0
60 protected static $startTimes = array();
65 public static function start()
67 array_push(self::$startTimes, microtime(TRUE));
71 * Stops the timer and returns the elapsed time.
75 public static function stop()
77 return microtime(TRUE) - array_pop(self::$startTimes);
81 * Formats the elapsed time as a string.
86 public static function secondsToTimeString($time)
90 $hours = sprintf('%02d', ($time >= 3600) ? floor($time / 3600) : 0);
93 ($time >= 60) ? floor($time / 60) - 60 * $hours : 0
95 $seconds = sprintf('%02d', $time - 60 * 60 * $hours - 60 * $minutes);
97 if ($hours == 0 && $minutes == 0) {
98 $seconds = sprintf('%1d', $seconds);
100 $buffer .= $seconds . ' second';
102 if ($seconds != '1') {
107 $buffer = $hours . ':';
110 $buffer .= $minutes . ':' . $seconds;
117 * Formats the elapsed time since the start of the request as a string.
121 public static function timeSinceStartOfRequest()
123 return self::secondsToTimeString(time() - $_SERVER['REQUEST_TIME']);
127 * Returns the resources (time, memory) of the request as a string.
131 public static function resourceUsage()
134 'Time: %s, Memory: %4.2fMb',
135 self::timeSinceStartOfRequest(),
136 memory_get_peak_usage(TRUE) / 1048576