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<?php const FOO_BAR = [1, 2, 3] + ['a' => 'abc']; var_dump(FOO_BAR); var_dump(FOO_BAR['a']);
Output for 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) ["a"]=> string(3) "abc" } string(3) "abc"
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Fatal error: Arrays are not allowed as constants in /in/e7I5D on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/e7I5D on line 3
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
Parse error: syntax error, unexpected T_CONST in /in/e7I5D on line 3
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 T_CONST in /in/e7I5D on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/e7I5D on line 3
Process exited with code 255.

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