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<?php $x = range(0, 100000); $keys = array_map(function ($x) { return chr(46+rand(0, 26)) . chr(46+rand(0, 26)) . chr(46+rand(0, 26)) . $x; }, $x); $vars = array_combine($keys, $x); $time = 0.0; for ($i = $runs = 100; $i-- > 0;) { $t = microtime(TRUE); extract($vars); $time += microtime(TRUE) - $t; } echo sprintf("%.4f", $time / $runs);
Output for 7.2.9
0.0068
Output for 7.2.8
0.0064
Output for 7.2.7
0.0041
Output for 7.2.6
0.0050
Output for 7.2.5
0.0044
Output for 7.2.4
0.0034
Output for 7.0.28 - 7.0.29, 7.1.15 - 7.1.18, 7.1.20, 7.2.3

Process exited with code 137.
Output for 7.1.21
0.0136
Output for 7.1.19
0.0095
Output for 7.0.31
0.0093
Output for 7.0.30
0.0096
preferences:
54.65 ms | 401 KiB | 23 Q