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a guest Mar 8th, 2018 77 Never
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  1. <?php
  2.  
  3. const EXECUTION_TIME = 5;
  4.  
  5. // <preparation>
  6. $test = new class
  7. {
  8.     public function exists()
  9.     {
  10.         is_bool(true);
  11.     }
  12. };
  13. // </preparation>
  14.  
  15. $timingStart = microtime(true);
  16. $memoryStart = memory_get_usage(true);
  17. $peakStart   = memory_get_peak_usage(true);
  18.  
  19. for ($iterations = 0; $iterations < PHP_INT_MAX; $iterations++) {
  20.     // <code>
  21.     $test->exists();
  22.     // </code>
  23.  
  24.     // Timing control:
  25.     if ($iterations % 1000 === 0 &&
  26.         microtime(true) - $timingStart >= EXECUTION_TIME) {
  27.         break;
  28.     }
  29. }
  30.  
  31. $timingDuration = microtime(true) - $timingStart;
  32. $memoryEnd      = memory_get_usage(true);
  33. $memoryUsage    = $memoryEnd - $memoryStart;
  34. $peakEnd        = memory_get_peak_usage(true);
  35. $peakUsage      = $peakEnd - $peakStart;
  36.  
  37. echo "\n\n";
  38.  
  39. printf("Cycles count   : %s\n", number_format($iterations, 0, '', '.'));
  40. printf("Cycles by min. : %.2f\n", 60 / $timingDuration * $iterations);
  41. printf("Total time     : %.2f sec.\n", $timingDuration);
  42. printf("Memory usage   : %.2f MB (on end) - %.2f MB (on start) = %.2f MB (delta)\n",
  43.     $memoryEnd / 1048576,
  44.     $memoryStart / 1048576,
  45.     $memoryUsage / 1048576);
  46. printf("Memory peak    : %.2f MB (on end) - %.2f MB (on start) = %.2f MB (delta)\n\n\n",
  47.     $peakEnd / 1048576,
  48.     $peakStart / 1048576,
  49.     $peakUsage / 1048576);
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