/**
* @covers ::stop
*/
public function testStop_Output_Profile1()
{
$this->expectOutputRegex("~^Time for profile 'profile1': [\\d.]+" . PHP_EOL . "\$~");
$this->profiler->start("profile1");
usleep(100);
$this->profiler->stop("profile1", true);
}
/**
* Profiles one or more calls to a function
*
* Calls a function the number of times specified by $num_runs, and displays the total run time,
* the average run time, and the time for each run. Also returns an array with the same
* information.
*
* Regardless of the number of runs, the output only shows 40 run times: the first 20 and the
* last 20. The returned array always contains the times for each run.
*
* Note: Profiling must be enabled to use this method.
*
* Examples:
* ```php
* // This example runs the closure 100 times, and displays the profile results.
* $runs = Profiler::run(100, true, function() {
* ... do something here ...
* });
*
* // Output:
* //
* // Total Runs: 100
* // Total Time: 0.099596977234
* // Average Time: 0.000981624126
* // -------------------------------
* // Run #1 0.000479936599
* // Run #2 0.000968933105
* // Run #3 0.000982999801
* // Run #4 0.000988006591
* // ......
* // Run #97 0.000985145568
* // Run #98 0.000983953476
* // Run #99 0.000997066497
* // Run #100 0.000993013382
*
* print_r($runs);
* // Output:
* // [
* // "total" => 0.099596977234,
* // "average" => 0.000981624126,
* // "runs" => [
* // 0.0004799365997,
* // 0.0009689331055,
* // ....
* // 0.0009930133820
* // ]
* // ]
*
* // Use false for the second argument to turn off displaying the results.
* $runs = Profiler::run(100, false, function() {
* ... do something here ...
* });
*
* // The middle argument may be omitted, and defaults to true.
* $runs = Profiler::run(100, function() {
* ... do something here ...
* });
* ```
*
* @param int $num_runs The number of times to run the function
* @param bool $display Whether or not to display the results
* @param callable $callable The function to call
*
* @return array
*/
public static function run($num_runs, $display = true, callable $callable = null)
{
self::swapCallable($display, $callable, true);
$results = [];
if (self::$enabled) {
$profiler = new Profiler();
$run_times = [];
$memory = memory_get_usage();
for ($i = 0; $i < $num_runs; $i++) {
$profiler->start("loop");
$callable();
$run_times[] = $profiler->stop("loop", false);
}
$results["memory"] = memory_get_usage() - $memory;
$results["total"] = array_sum($run_times);
$results["average"] = $results["total"] / $num_runs;
$results["runs"] = $run_times;
if ($display) {
$output = sprintf("Total Runs: %17s%s", number_format($num_runs), PHP_EOL);
$output .= sprintf("Total Time: %17.12f%s", $results["total"], PHP_EOL);
$output .= sprintf("Average Time: %17.12f%s", $results["average"], PHP_EOL);
$output .= sprintf("Total Memory: %17s%s", Conversions::bytesToHuman($results["memory"]), PHP_EOL);
$output .= sprintf('-------------------------------%s', PHP_EOL);
if (count($run_times) > 50) {
$runs = [];
$runs[] = array_slice($run_times, 0, 20);
$runs[] = array_slice($run_times, -20, null, true);
} else {
$runs[] = $run_times;
}
foreach ($runs as $run) {
foreach ($run as $index => $microtime) {
$output .= sprintf("Run #%-7d %18.12f%s", ++$index, $microtime, PHP_EOL);
if (20 == $index) {
$output .= "......." . PHP_EOL;
}
}
}
echo $output;
}
}
return $results;
}
