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<?php $array = array('a', 'b', 'c'); function nestArray($arr) { return array(array_shift($arr) => nestArray($arr)); } var_dump(nestArray($array));
Output for 7.4.0 - 7.4.1, 8.1.28, 8.2.18, 8.3.5 - 8.3.6
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 4096 bytes) in /in/1EsEb on line 5
Process exited with code 255.
Output for 8.2.17, 8.3.4
Fatal error: Out of memory (allocated 31457280 bytes) (tried to allocate 4096 bytes) in /in/1EsEb on line 5 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 7.0.0 - 7.0.4, 7.0.6 - 7.0.14, 7.0.16 - 7.0.23, 7.0.25 - 7.0.33, 7.1.0 - 7.1.1, 7.1.3 - 7.1.4, 7.1.6 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 262144 bytes) in /in/1EsEb on line 5
Process exited with code 255.
Output for 5.6.32 - 5.6.33, 7.0.5, 7.0.15, 7.0.24, 7.1.2, 7.1.5

Process exited with code 137.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.31, 5.6.34 - 5.6.40
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 130968 bytes) in /in/1EsEb on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 523800 bytes) in /in/1EsEb on line 5
Process exited with code 255.
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

Process exited with code 139.

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