--TEST-- Test is_subclass_of() function : usage variations - unexpected type for arg 1 --FILE-- 'red', 'item' => 'pen'), // null data NULL, null, // boolean data true, false, TRUE, FALSE, // empty data "", '', // string data "string", 'String', // undefined data $undefined_var, // unset data $unset_var, ); // loop through each element of the array for object foreach($values as $value) { echo "\nArg value $value \n"; var_dump( is_subclass_of($value, $class_name) ); }; echo "Done"; ?> --EXPECTF-- *** Testing is_subclass_of() : usage variations *** Error: 8 - Undefined variable: undefined_var, %s(69) Error: 8 - Undefined variable: unset_var, %s(72) Arg value 0 bool(false) Arg value 1 bool(false) Arg value 12345 bool(false) Arg value -2345 bool(false) Arg value 10.5 bool(false) Arg value -10.5 bool(false) Arg value 101234567000 bool(false) Arg value 1.07654321E-9 bool(false) Arg value 0.5 bool(false) Arg value Array bool(false) Arg value Array bool(false) Arg value Array bool(false) Arg value Array bool(false) Arg value Array bool(false) Arg value bool(false) Arg value bool(false) Arg value 1 bool(false) Arg value bool(false) Arg value 1 bool(false) Arg value bool(false) Arg value Error: 2 - Unknown class passed as parameter, %s(79) bool(false) Arg value Error: 2 - Unknown class passed as parameter, %s(79) bool(false) Arg value string In __autoload(string) Error: 2 - Unknown class passed as parameter, %s(79) bool(false) Arg value String In __autoload(String) Error: 2 - Unknown class passed as parameter, %s(79) bool(false) Arg value bool(false) Arg value bool(false) Done