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<?php $post = ['a' => [true => 'b', false => 'c']]; var_export($post); echo "\n"; var_export(!empty($post['a'])); echo "\n"; var_export(!empty($post['a'][0])); echo "\n"; var_export(!empty($post['a'][1])); echo "\n"; var_export(!empty($post['a'][7])); echo "\n"; var_export(!empty($post['a'][false])); echo "\n"; var_export(!empty($post['a'][true]));
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.30, 7.4.0 - 7.4.23, 8.0.0 - 8.0.10, 8.1rc1 - rc2
array ( 'a' => array ( 1 => 'b', 0 => 'c', ), ) true true true false true true

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76.31 ms | 459 KiB | 5 Q