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<?php function test ($affect) { if (![$affect]) { $affect = [$affect]; } var_dump($affect); } test('coucou'); test(['coucou']);
Output for 5.6.0 - 5.6.30, hhvm-3.18.4 - 3.21.0, 7.0.0 - 7.3.0beta1
string(6) "coucou" array(1) { [0]=> string(6) "coucou" }