--TEST-- Test array_diff_assoc() function : variation - array containing different data types --FILE-- array( 0, 1, 12345, -2345), // float data /*2*/ 'float' => array( 10.5, -10.5, 12.3456789000e10, 12.3456789000E-10, .5), // null data /*3*/ 'null' => array( NULL, null), // boolean data /*4*/ 'bool' => array( true, false, TRUE, FALSE), // empty data /*5*/ 'empty' => array( "", ''), // string data /*6*/ 'string' => array( "string", 'string', $heredoc), // binary data /*7*/ 'binary' => array( b"binary", (binary)"binary"), // object data /*8*/ 'object' => array( new classA()), // undefined data /*9*/ 'undefined' => array( @$undefined_var), // unset data /*10*/ 'unset' => array( @$unset_var), ); // loop through each element of $inputs to check the behavior of array_diff_assoc $iterator = 1; foreach($inputs as $key => $input) { echo "\n-- Iteration $iterator --\n"; var_dump( array_diff_assoc($input, $array)); $iterator++; }; echo "Done"; ?> --EXPECTF-- *** Testing array_diff_assoc() : usage variations *** -- Iteration 1 -- array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(12345) [3]=> int(-2345) } -- Iteration 2 -- array(5) { [0]=> float(10.5) [1]=> float(-10.5) [2]=> float(123456789000) [3]=> float(1.23456789E-9) [4]=> float(0.5) } -- Iteration 3 -- array(2) { [0]=> NULL [1]=> NULL } -- Iteration 4 -- array(3) { [1]=> bool(false) [2]=> bool(true) [3]=> bool(false) } -- Iteration 5 -- array(2) { [0]=> string(0) "" [1]=> string(0) "" } -- Iteration 6 -- array(3) { [0]=> string(6) "string" [1]=> string(6) "string" [2]=> string(11) "hello world" } -- Iteration 7 -- array(2) { [0]=> string(6) "binary" [1]=> string(6) "binary" } -- Iteration 8 -- array(1) { [0]=> object(classA)#%d (0) { } } -- Iteration 9 -- array(1) { [0]=> NULL } -- Iteration 10 -- array(1) { [0]=> NULL } Done