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<?php function bar(callable $fn) { echo "It passed a callable check\n"; @$fn(); } class foo { function bar() { echo "oh dear lord, this is an instance function"; } } $foo = new foo; @bar(['foo', 'bar']);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Fatal error: Uncaught TypeError: bar(): Argument #1 ($fn) must be of type callable, array given, called in /in/6GgV9 on line 19 and defined in /in/6GgV9:3 Stack trace: #0 /in/6GgV9(19): bar(Array) #1 {main} thrown in /in/6GgV9 on line 3
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
It passed a callable check oh dear lord, this is an instance function
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