--TEST-- Test array_unique() function : usage variations - associative array with different values --FILE-- 0, '1' => 0), array("one" => 1, 'two' => 2, "three" => 1, 4 => 1), // arrays with float values /*3*/ array("float1" => 2.3333, "float2" => 2.3333), array("f1" => 1.2, 'f2' => 3.33, 3 => 4.89999922839999, 'f4' => 1.2), // arrays with string values /*5*/ array(111 => "\tHello", "red" => "col\tor", 2 => "\v\fworld", 3.3 => "\tHello"), array(111 => '\tHello', "red" => 'col\tor', 2 => '\v\fworld', 3.3 => '\tHello'), array(1 => "hello", "heredoc" => $heredoc, $heredoc), // array with object, unset variable and resource variable /*8*/ array(11 => new classA(), "unset" => @$unset_var, "resource" => $fp, new classA(), $fp), ); // loop through each sub-array of $inputs to check the behavior of array_unique() $iterator = 1; foreach($inputs as $input) { echo "-- Iteration $iterator --\n"; var_dump( array_unique($input) ); $iterator++; } fclose($fp); echo "Done"; ?> --EXPECTF-- *** Testing array_unique() : assoc. array with diff. values to $input argument *** -- Iteration 1 -- array(1) { [0]=> int(0) } -- Iteration 2 -- array(2) { ["one"]=> int(1) ["two"]=> int(2) } -- Iteration 3 -- array(1) { ["float1"]=> float(2.3333) } -- Iteration 4 -- array(3) { ["f1"]=> float(1.2) ["f2"]=> float(3.33) [3]=> float(4.8999992284) } -- Iteration 5 -- array(3) { [111]=> string(6) " Hello" ["red"]=> string(6) "col or" [2]=> string(7) " world" } -- Iteration 6 -- array(3) { [111]=> string(7) "\tHello" ["red"]=> string(7) "col\tor" [2]=> string(9) "\v\fworld" } -- Iteration 7 -- array(2) { [1]=> string(5) "hello" ["heredoc"]=> string(11) "Hello world" } -- Iteration 8 -- array(3) { [11]=> object(classA)#%d (0) { } ["unset"]=> NULL ["resource"]=> resource(%d) of type (stream) } Done