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<?php $a = [1 => 1, 2 => 2, 3 => "1", 'a' => 'a']; var_dump( array_unique($a, SORT_REGULAR), array_unique($a, SORT_STRING) );
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [1]=> int(1) [2]=> int(2) ["a"]=> string(1) "a" } array(3) { [1]=> int(1) [2]=> int(2) ["a"]=> string(1) "a" }

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