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--TEST-- Test ob_implicit_flush() function : check return value (always null). --FILE-- <?php /* Prototype : proto void ob_implicit_flush([int flag]) * Description: Turn implicit flush on/off and is equivalent to calling flush() after every output call * Source code: main/output.c * Alias to functions: */ echo "*** Testing ob_implicit_flush() : check return value ***\n"; var_dump(ob_implicit_flush()); var_dump(ob_implicit_flush(true)); var_dump(ob_implicit_flush(false)); echo "Done"; ?> --EXPECTF-- *** Testing ob_implicit_flush() : check return value *** NULL NULL NULL Done