PHP code example of petrknap / php-profiler

1. Go to this page and download the library: Download petrknap/php-profiler library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

petrknap / php-profiler example snippets


namespace PetrKnap\Profiler;

$profiling = Profiling::start();
// do something
$profile = $profiling->finish();

printf('It took %.1f s to do something.', $profile->getDuration());


namespace PetrKnap\Profiler;

function doSomething(ProfilerInterface $profiler): string {
    return $profiler->profile(function (): string {
        return 'something';
    })->process(fn (ProfileInterface $profile) => printf(
        'It took %.1f s to do something.',
        $profile->getDuration(),
    ));
}


namespace PetrKnap\Profiler;

echo doSomething(new Profiler());
echo doSomething(new NullProfiler());


namespace PetrKnap\Profiler;

$profiling = Profiling::start();
// do something
$profiling->takeSnapshot();
// do something more
$profile = $profiling->finish();

printf('There are %d memory usage records.', count($profile->getMemoryUsages()));


declare(ticks=2); // this declaration is important (N=2)

namespace PetrKnap\Profiler;

$profiling = Profiling::start(takeSnapshotOnTick: true);
(fn () => 'something')();
$profile = $profiling->finish();

printf('There are %d memory usage records.', count($profile->getMemoryUsages()));


namespace PetrKnap\Profiler;

$profile = (new Profiler())->profile(function (ProfilerInterface $profiler): void {
    // do something
    $profiler->profile(function (): void {
        // do something more
    });
});

printf('There are %d memory usage records.', count($profile->getMemoryUsages()));