Online PHP editor | output for NCmIo

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7: Warning: Undefined array key "attributes" in /in/NCmIo on line 8 Fatal error: Uncaught TypeError: array_merge(): Argument #1 must be of type array, null given in /in/NCmIo:8 Stack trace: #0 /in/NCmIo(8): array_merge(NULL, Array) #1 {main} thrown in /in/NCmIo on line 8
Process exited with code 255.
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33: Notice: Undefined index: attributes in /in/NCmIo on line 8 Warning: array_merge(): Expected parameter 1 to be an array, null given in /in/NCmIo on line 8 NULL
Output for 7.3.32 - 7.3.33, 7.4.26: Warning: array_merge(): Expected parameter 1 to be an array, null given in /in/NCmIo on line 8 NULL
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.22, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33: Notice: Undefined index: attributes in /in/NCmIo on line 8 Warning: array_merge(): Argument #1 is not an array in /in/NCmIo on line 8 NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Notice: Undefined index: attributes in /in/NCmIo on line 8 Warning: array_merge(): Argument #1 is not an array in /in/NCmIo on line 8 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9: Notice: Undefined index: attributes in /in/NCmIo on line 8 array(1) { ["test"]=> string(11) "my_test_123" }