--TEST-- Test in_array() function : usage variations - different haystack values --FILE-- 'd', 3, ".001" =>-67, "-.051" =>"k", 0.091 =>"-.08", "e" =>"5", "y" =>NULL, NULL =>"", 0, TRUE, FALSE, -27.39999999999, " ", "abcd\x00abcd\x00\abcd\x00abcdefghij", "abcd\nabcd\tabcd\rabcd\0abcd" ); $array_type = array(TRUE, FALSE, 1, 0, -1, "1", "0", "-1", NULL, array(), "PHP", ""); /* loop to do loose and strict type check of elements in $array_type on elements in $misc_array using in_array(); checking PHP type comparison tables */ $counter = 1; foreach($array_type as $type) { echo "-- Iteration $counter --\n"; //loose type checking var_dump( in_array($type,$misc_array ) ); //strict type checking var_dump( in_array($type,$misc_array,true) ); //loose type checking var_dump( in_array($type,$misc_array,false) ); $counter++; } echo "Done\n"; ?> --EXPECTF-- *** Testing in_array() with different haystack values *** -- Iteration 1 -- bool(true) bool(true) bool(true) -- Iteration 2 -- bool(true) bool(true) bool(true) -- Iteration 3 -- bool(true) bool(false) bool(true) -- Iteration 4 -- bool(true) bool(true) bool(true) -- Iteration 5 -- bool(true) bool(false) bool(true) -- Iteration 6 -- bool(true) bool(false) bool(true) -- Iteration 7 -- bool(true) bool(false) bool(true) -- Iteration 8 -- bool(true) bool(false) bool(true) -- Iteration 9 -- bool(true) bool(true) bool(true) -- Iteration 10 -- bool(true) bool(false) bool(true) -- Iteration 11 -- bool(true) bool(false) bool(true) -- Iteration 12 -- bool(true) bool(true) bool(true) Done