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<?php $tests = [ null, [], ['foo'] ]; foreach ($tests as $test) { echo "\n--------------\n" . var_export($test, true) . " has a boolean value of: " . var_export((bool)$test, true) . " - "; if ($test) { echo "pass"; } else { echo "fail"; } }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12, 8.1rc1 - rc3
-------------- NULL has a boolean value of: false - fail -------------- array ( ) has a boolean value of: false - fail -------------- array ( 0 => 'foo', ) has a boolean value of: true - pass

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