3v4l.org

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<?php $array = array_fill(0, 20000, 0); $time = microtime(true); for ($i = 0; $i <= 100000; $i++) { array_merge($array); } var_dump(microtime(true) - $time); $time = microtime(true); for ($i = 0; $i <= 100000; $i++) { array_values($array); } var_dump(microtime(true) - $time);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7

Process exited with code 137.

preferences:
132.24 ms | 404 KiB | 173 Q