--TEST-- Test is_a() function : usage variations - wrong type for arg 2 --INI-- error_reporting=E_ALL | E_STRICT | E_DEPRECATED --FILE-- 'red', 'item' => 'pen'), // null data NULL, null, // boolean data true, false, TRUE, FALSE, // empty data "", '', // object data new C, // undefined data $undefined_var, // unset data $unset_var, ); // loop through each element of the array for class_name foreach($values as $value) { echo @"\nArg value $value \n"; var_dump( is_a($object, $value) ); }; echo "Done"; ?> --EXPECTF-- *** Testing is_a() : usage variations *** Notice: Undefined variable: undefined_var in %s on line 64 Notice: Undefined variable: unset_var in %s on line 67 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 Warning: is_a() expects parameter 2 to be string, array given in %s on line %d NULL Arg value Array Warning: is_a() expects parameter 2 to be string, array given in %s on line %d NULL Arg value Array Warning: is_a() expects parameter 2 to be string, array given in %s on line %d NULL Arg value Array Warning: is_a() expects parameter 2 to be string, array given in %s on line %d NULL Arg value Array Warning: is_a() expects parameter 2 to be string, array given in %s on line %d NULL 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 bool(false) Arg value bool(false) Arg value C Instance bool(false) Arg value bool(false) Arg value bool(false) Done