Online PHP editor | perf for sauQ9

@ 2018-12-08T10:31:58Z

<?php
// $countAfter[$i][$j] will contain the number of occurrences of a pair $i, $j in the randomly generated sequence
$countAfter = [1 => [1 => 0, 2 => 0], 
               2 => [1 => 0, 2 => 0]
              ];
$prev = 1; // We assume for simplicify that the "previously" generated value was 1              
for ($i = 0; $i < 10000; $i++) {
    $n = mt_rand(1, 2);
    $countAfter[$prev][$n]++;
    $prev = $n;
}
print_r($countAfter);

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)
7.3.0	0.272	0.010	14.38
7.2.13	0.173	0.003	14.59
7.2.12	0.240	0.012	14.74
7.2.11	0.164	0.009	14.56
7.2.10	0.175	0.008	14.73
7.2.9	0.233	0.010	14.67
7.2.8	0.159	0.010	14.62
7.2.7	0.263	0.010	14.85
7.2.6	0.374	0.010	14.86
7.2.5	0.225	0.013	14.92
7.2.4	0.329	0.007	14.98
7.2.3	0.250	0.012	15.10
7.2.2	0.306	0.008	14.73
7.2.1	0.329	0.007	14.81
7.2.0	0.245	0.008	15.00
7.1.25	0.234	0.008	14.05
7.0.33	0.173	0.016	13.41
5.6.38	0.009	0.011	14.27

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