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<?php $arr = [ [''], [false], [null], [0], [0.4], [-.1], ["\0"] ]; var_export(array_unique($arr, SORT_REGULAR));
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 0 => '', ), 3 => array ( 0 => 0, ), 4 => array ( 0 => 0.4, ), 5 => array ( 0 => -0.1, ), 6 => array ( 0 => '' . "\0" . '', ), )

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