Online PHP editor | perf for thr3B

@ 2022-01-14T11:35:58Z

<?php

// Initializing
$arr = [];

// Mocking
for ($i = 0; $i < 400; $i++){
  for ($j = 0; $j < 400; $j++){
      $arr[$i][] = $j; 
  }
}


// --------------------------------------------------------


// Start time tracking
$time_start = microtime(true); 

for ($i = 0; $i < 400; $i++){
  for ($j = 0; $j < 400; $j++){
      if ($arr[$i][$j] > 0){ /* Do stuff */ }
  }
}

// Finish time tracking
$time_end = microtime(true);

// Execution time of the script
$execution_time = ($time_end - $time_start)/60;
echo 'Total Execution Time #1: '.$execution_time.' Secs' . PHP_EOL;


// --------------------------------------------------------


// Start time tracking
$time_start = microtime(true); 

for ($i = 0; $i < 400; $i++){
  for ($j = 0; $j < 400; $j++){
      if ($arr[$j][$i] > 0){ /* Do stuff */ }
  }
}

// Finish time tracking
$time_end = microtime(true);

// Execution time of the script
$execution_time = ($time_end - $time_start)/60;
echo 'Total Execution Time #2: '.$execution_time.' Secs';

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.1.1	0.006	0.016	23.61
8.1.0	0.006	0.016	23.41
8.0.14	0.007	0.017	22.76
8.0.13	0.000	0.022	22.75
8.0.12	0.009	0.013	22.83
8.0.11	0.006	0.016	22.86
8.0.10	0.000	0.022	22.67
8.0.9	0.006	0.016	22.90
8.0.8	0.006	0.016	22.74
8.0.7	0.016	0.006	22.81
8.0.6	0.009	0.012	22.86
8.0.5	0.000	0.022	22.63
8.0.3	0.004	0.018	22.61
8.0.2	0.004	0.019	22.85
8.0.1	0.006	0.016	22.87
7.4.27	0.006	0.016	22.48
7.4.26	0.004	0.019	22.33
7.4.25	0.006	0.016	22.48
7.4.24	0.007	0.017	22.37
7.4.23	0.007	0.017	22.39
7.4.22	0.007	0.017	22.33
7.4.21	0.004	0.018	22.48
7.4.20	0.010	0.013	22.38
7.4.19	0.000	0.024	22.50
7.4.18	0.009	0.015	22.43
7.4.16	0.000	0.023	22.44
7.4.15	0.007	0.016	22.47
7.4.14	0.003	0.021	22.31
7.4.13	0.003	0.020	22.40
7.4.12	0.011	0.011	22.36
7.4.11	0.006	0.016	22.45
7.4.10	0.007	0.017	22.57
7.4.9	0.010	0.013	22.25
7.4.8	0.003	0.020	22.45
7.4.7	0.003	0.019	22.35
7.4.6	0.006	0.016	22.38
7.4.5	0.010	0.013	22.25
7.4.4	0.007	0.016	22.40
7.4.3	0.007	0.017	22.37
7.4.2	0.007	0.016	22.43
7.4.1	0.004	0.019	22.41
7.4.0	0.003	0.021	22.50

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