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<?php function wtf(array $arrayUnderTest) { echo is_callable($arrayUnderTest) ? 'This is a callable' : 'This is not a callable'; echo "\n"; echo is_array($arrayUnderTest) ? 'This is an array' : 'This is not an array'; $arrayUnderTest(); } class x { function foo() { print "\nfoo"; } } $x = new x(); $test = array($x, "foo"); wtf($test);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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
This is a callable This is an array foo
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215.26 ms | 404 KiB | 300 Q