--TEST-- Test is_a() function : usage variations - case sensitivity --INI-- error_reporting=E_ALL | E_STRICT | E_DEPRECATED --FILE-- <?php /* Prototype : proto bool is_a(object object, string class_name) * Description: Returns true if the object is of this class or has this class as one of its parents * Source code: Zend/zend_builtin_functions.c * Alias to functions: */ echo "*** Testing is_a() : usage variations ***\n"; class caseSensitivityTest {} class caseSensitivityTestChild extends caseSensitivityTest {} var_dump(is_a(new caseSensitivityTestChild, 'caseSensitivityTEST')); echo "Done"; ?> --EXPECTF-- *** Testing is_a() : usage variations *** bool(true) Done