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<?php class W { const X = [1 => 2, 3 => 4]; public function f() { $a = 5; if (isset(static::X[$a])) { print "$a exists\n"; } else { print "$a doesn't exists\n"; } } } $x = new X; $x->f();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Class "X" not found in /in/bDcCd:16 Stack trace: #0 {main} thrown in /in/bDcCd on line 16
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Class 'X' not found in /in/bDcCd:16 Stack trace: #0 {main} thrown in /in/bDcCd on line 16
Process exited with code 255.
Output for 5.6.7 - 5.6.28
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/bDcCd on line 8
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Fatal error: Arrays are not allowed in class constants in /in/bDcCd on line 4
Process exited with code 255.
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