3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array_fill(0,200000,'a'); $b = array_fill(0,200000,'b'); array_merge($a, $b);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.1, 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 8.1.2 - 8.1.27
Fatal error: Out of memory (allocated 18882560) (tried to allocate 16777224 bytes) in /in/Vgs5C on line 4 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 5.5.6 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 4194304 bytes) in /in/Vgs5C on line 4
Process exited with code 255.
Output for 5.5.0 - 5.5.5
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 72 bytes) in /in/Vgs5C on line 4
Process exited with code 255.
preferences:
218.25 ms | 401 KiB | 330 Q