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<?php enum E { case A; case B; case D; case E; } print_r(E::cases()); enum E2 { case E; case D; case B; case A; } print_r(E2::cases()); enum E3: int { case A = 3; case B = 12; case D = 1; case E = 20; } $cases = E3::cases(); uasort($cases, fn ($a, $b) => $a->value <=> $b->value); print_r($cases);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6
Array ( [0] => E Enum ( [name] => A ) [1] => E Enum ( [name] => B ) [2] => E Enum ( [name] => D ) [3] => E Enum ( [name] => E ) ) Array ( [0] => E2 Enum ( [name] => E ) [1] => E2 Enum ( [name] => D ) [2] => E2 Enum ( [name] => B ) [3] => E2 Enum ( [name] => A ) ) Array ( [2] => E3 Enum:int ( [name] => D [value] => 1 ) [0] => E3 Enum:int ( [name] => A [value] => 3 ) [1] => E3 Enum:int ( [name] => B [value] => 12 ) [3] => E3 Enum:int ( [name] => E [value] => 20 ) )
Output for 8.0.0 - 8.0.30
Parse error: syntax error, unexpected identifier "E" in /in/R1pFL on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Parse error: syntax error, unexpected 'E' (T_STRING) in /in/R1pFL 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, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/R1pFL 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_STRING in /in/R1pFL on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/R1pFL on line 3
Process exited with code 255.

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