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<?php $array = ["red", "color" => "red", 78, 78, 12, "12", false, null, false, 0, true, 1, 0, null, 2.12, "2.12", 8, "-s"]; var_dump(array_unique($array, SORT_REGULAR)); sort($array, SORT_REGULAR); var_dump($array);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(10) { [0]=> string(3) "red" ["color"]=> string(3) "red" [1]=> int(78) [3]=> int(12) [5]=> bool(false) [6]=> NULL [10]=> int(1) [13]=> float(2.12) [15]=> int(8) [16]=> string(2) "-s" } array(18) { [0]=> bool(false) [1]=> NULL [2]=> bool(false) [3]=> string(2) "-s" [4]=> int(0) [5]=> int(0) [6]=> NULL [7]=> int(12) [8]=> string(2) "12" [9]=> int(78) [10]=> int(78) [11]=> string(3) "red" [12]=> bool(true) [13]=> int(1) [14]=> float(2.12) [15]=> string(4) "2.12" [16]=> int(8) [17]=> string(3) "red" }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(11) { [0]=> string(3) "red" ["color"]=> string(3) "red" [1]=> int(78) [3]=> int(12) [5]=> bool(false) [6]=> NULL [7]=> bool(false) [10]=> int(1) [13]=> float(2.12) [15]=> int(8) [16]=> string(2) "-s" } array(18) { [0]=> NULL [1]=> NULL [2]=> string(3) "red" [3]=> int(0) [4]=> bool(false) [5]=> string(3) "red" [6]=> int(0) [7]=> bool(false) [8]=> string(2) "12" [9]=> int(12) [10]=> bool(true) [11]=> string(2) "-s" [12]=> int(1) [13]=> float(2.12) [14]=> string(4) "2.12" [15]=> int(8) [16]=> int(78) [17]=> int(78) }

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