3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = new SplFixedArray(1024 * 1024); // array(); for ($i = 0; $i < 1024 * 1024; ++$i) $array[$i] = 0; echo memory_get_peak_usage();
Output for 8.3.0 - 8.3.6
17164376
Output for 8.2.0 - 8.2.18
17164360
Output for 8.1.4 - 8.1.28
17164672
Output for 8.1.0 - 8.1.3
17164656
Output for 8.0.17 - 8.0.30
17164240
Output for 8.0.0 - 8.0.16
17164224
Output for 7.4.0 - 7.4.33
17164544
Output for 7.3.16 - 7.3.33
17164448
Output for 7.2.29 - 7.2.33
17160568
Output for 7.2.0 - 7.2.6
17160608
Output for 7.1.0, 7.1.7, 7.1.20
17123968
Output for 7.1.10

Process exited with code 137.
Output for 7.1.5 - 7.1.6
17124096
Output for 7.0.0 - 7.0.20
17124000
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.25
58938512
preferences:
177.36 ms | 402 KiB | 224 Q