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<?php $arr = []; for ($i = 0; $i < 1000000; ++$i) { $arr[$i] = "always"; } printf("%.2f MiB\n", memory_get_peak_usage() / (1 << 20));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
16.37 MiB
Output for 7.2.0 - 7.2.3, 7.2.5 - 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
32.37 MiB
Output for 8.1.2 - 8.1.27
Fatal error: Out of memory (allocated 18878464) (tried to allocate 33554440 bytes) in /in/IUXoj on line 4 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 7.2.4

Process exited with code 137.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
32.33 MiB
Output for 5.4.0 - 5.4.45, 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/IUXoj on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/IUXoj on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/IUXoj on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/IUXoj on line 2
Process exited with code 255.

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237.27 ms | 401 KiB | 326 Q