--TEST-- Test array_intersect() function : usage variations - different arrays for 'arr2' argument --FILE-- 22 'single quoted string' "double quoted string" 2222 != 1111.\t 0000 = 0000\n EOT; // array to be passsed to $arr1 argument $arr1 = array ( 1, 1.1, "hello", "one", NULL, 2, 'world', true, false, false => 5, 'aaaa\r', "aaaa\r", $numeric_string, $diff_whitespaces, "one" => "ten", 4 => "four", "two" => 2, 2 => "two", '', null => "null", '' => 'emptys' ); // arrays to be passed to $arr2 argument $arrays = array ( /*1*/ array(1, 2), // array with default keys and numeric values array(1.1, 2.2), // array with default keys & float values array(false,true), // array with default keys and boolean values array(), // empty array /*5*/ array(NULL), // array with NULL array("a\v\f","aaaa\r","b","b\tbbb","c","\[\]\!\@\#\$\%\^\&\*\(\)\{\}"), // array with double quoted strings array('a\v\f','aaaa\r','b','b\tbbb','c','\[\]\!\@\#\$\%\^\&\*\(\)\{\}'), // array with single quoted strings array($blank_line, $multiline_string, $diff_whitespaces, $numeric_string), // array with heredocs // associative arrays /*9*/ array(1 => "one", 2 => "two", 3 => "three"), // explicit numeric keys, string values array("one" => 1, "two" => 2, "three" => 3 ), // string keys & numeric values array( 1 => 10, 2 => 20, 4 => 40, 3 => 30), // explicit numeric keys and numeric values array( "one" => "ten", "two" => "twenty", "three" => "thirty"), // string key/value array("one" => 1, 2 => "two", 4 => "four"), //mixed // associative array, containing null/empty/boolean values as key/value /*14*/ array(NULL => "NULL", null => "null", "NULL" => NULL, "null" => null), array(true => "true", false => "false", "false" => false, "true" => true), array("" => "emptyd", '' => 'emptys', "emptyd" => "", 'emptys' => ''), array(1 => '', 2 => "", 3 => NULL, 4 => null, 5 => false, 6 => true), array('' => 1, "" => 2, NULL => 3, null => 4, false => 5, true => 6), // array with repetative keys /*19*/ array("One" => 1, "two" => 2, "One" => 10, "two" => 20, "three" => 3) ); // loop through each sub-array within $arrrays to check the behavior of array_intersect() $iterator = 1; foreach($arrays as $arr2) { echo "-- Iteration $iterator --\n"; // Calling array_intersect() with default arguments var_dump( array_intersect($arr1, $arr2) ); // Calling array_intersect() with more arguments // additional argument passed is the same as $arr1 argument var_dump( array_intersect($arr1, $arr2, $arr1) ); $iterator++; } echo "Done"; ?> --EXPECT-- *** Testing array_intersect() : Passing different types of arrays to $arr2 argument *** -- Iteration 1 -- array(3) { [5]=> int(2) [7]=> bool(true) ["two"]=> int(2) } array(3) { [5]=> int(2) [7]=> bool(true) ["two"]=> int(2) } -- Iteration 2 -- array(1) { [1]=> float(1.1) } array(1) { [1]=> float(1.1) } -- Iteration 3 -- array(3) { [7]=> bool(true) [8]=> bool(false) [13]=> string(0) "" } array(3) { [7]=> bool(true) [8]=> bool(false) [13]=> string(0) "" } -- Iteration 4 -- array(0) { } array(0) { } -- Iteration 5 -- array(2) { [8]=> bool(false) [13]=> string(0) "" } array(2) { [8]=> bool(false) [13]=> string(0) "" } -- Iteration 6 -- array(1) { [10]=> string(5) "aaaa " } array(1) { [10]=> string(5) "aaaa " } -- Iteration 7 -- array(1) { [9]=> string(6) "aaaa\r" } array(1) { [9]=> string(6) "aaaa\r" } -- Iteration 8 -- array(2) { [11]=> string(90) "11 < 12. 123 >22 'single quoted string' "double quoted string" 2222 != 1111. 0000 = 0000 " [12]=> string(88) "hello world 1111 != 2222 heredoc double quoted string. with different white spaces" } array(2) { [11]=> string(90) "11 < 12. 123 >22 'single quoted string' "double quoted string" 2222 != 1111. 0000 = 0000 " [12]=> string(88) "hello world 1111 != 2222 heredoc double quoted string. with different white spaces" } -- Iteration 9 -- array(2) { [2]=> string(3) "two" [3]=> string(3) "one" } array(2) { [2]=> string(3) "two" [3]=> string(3) "one" } -- Iteration 10 -- array(3) { [5]=> int(2) [7]=> bool(true) ["two"]=> int(2) } array(3) { [5]=> int(2) [7]=> bool(true) ["two"]=> int(2) } -- Iteration 11 -- array(0) { } array(0) { } -- Iteration 12 -- array(1) { ["one"]=> string(3) "ten" } array(1) { ["one"]=> string(3) "ten" } -- Iteration 13 -- array(3) { [2]=> string(3) "two" [4]=> string(4) "four" [7]=> bool(true) } array(3) { [2]=> string(3) "two" [4]=> string(4) "four" [7]=> bool(true) } -- Iteration 14 -- array(2) { [8]=> bool(false) [13]=> string(0) "" } array(2) { [8]=> bool(false) [13]=> string(0) "" } -- Iteration 15 -- array(3) { [7]=> bool(true) [8]=> bool(false) [13]=> string(0) "" } array(3) { [7]=> bool(true) [8]=> bool(false) [13]=> string(0) "" } -- Iteration 16 -- array(3) { [8]=> bool(false) [13]=> string(0) "" [""]=> string(6) "emptys" } array(3) { [8]=> bool(false) [13]=> string(0) "" [""]=> string(6) "emptys" } -- Iteration 17 -- array(3) { [7]=> bool(true) [8]=> bool(false) [13]=> string(0) "" } array(3) { [7]=> bool(true) [8]=> bool(false) [13]=> string(0) "" } -- Iteration 18 -- array(1) { [0]=> int(5) } array(1) { [0]=> int(5) } -- Iteration 19 -- array(0) { } array(0) { } Done