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run code in 200+ php & hhvm versions
Bugs & Features
<?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 W; $x->f();
Output for 7.0.0 - 7.2.0
5 doesn't exists
Output for 5.6.8 - 5.6.28
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/upQIg on line 8
Process exited with code 255.
Output for 5.4.2 - 5.5.35
Fatal error: Arrays are not allowed in class constants in /in/upQIg on line 4
Process exited with code 255.
Output for 5.3.18 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/upQIg on line 4
Process exited with code 255.