Online PHP editor | output for KkIP1

Output for 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/KkIP1 on line 7
Process exited with code 255.
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4: Fatal error: Out of memory (allocated 25169920 bytes) (tried to allocate 8388616 bytes) in /in/KkIP1 on line 9 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.1, 8.1.28: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 33554440 bytes) in /in/KkIP1 on line 9
Process exited with code 255.
Output for 8.1.2 - 8.1.27: Fatal error: Out of memory (allocated 29364224) (tried to allocate 16777224 bytes) in /in/KkIP1 on line 9 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 8.0.13: Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 67108872 bytes) in /in/KkIP1 on line 9
Process exited with code 255.
Output for 7.1.10: Process exited with code 137.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28: happy
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/KkIP1 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/KkIP1 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/KkIP1 on line 5
Process exited with code 255.