3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(1024 * 1024); // array(); for ($i = 0; $i < 1024 * 1024; ++$i) $array[$i] = 0; echo memory_get_peak_usage();
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
17168496
Output for 8.1.0 - 8.1.1, 8.1.28
33946184
Output for 8.1.2 - 8.1.27
Fatal error: Out of memory (allocated 18878464) (tried to allocate 33554440 bytes) in /in/v6Wvn on line 5 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 8.0.0 - 8.0.30
33945720
Output for 7.4.0 - 7.4.33
33946024
Output for 7.3.16 - 7.3.33
33945944
Output for 7.2.29 - 7.2.33
33942032
Output for 7.2.0 - 7.2.6
33942072
Output for 7.1.0, 7.1.7 - 7.1.20
33905432
Output for 7.1.5 - 7.1.6
33905480
Output for 7.0.0 - 7.0.20
33905448
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/v6Wvn on line 5
Process exited with code 255.
preferences:
162.63 ms | 402 KiB | 183 Q