--TEST-- Test join() function : usage variations - sub array as argument --FILE-- "one", 2 => "two"), "PHP", 50); // pieces as array containing sub array var_dump( join("TEST", $sub_array) ); // glue as array & pieces as array containing sub array var_dump( join(array(1, 2, 3, 4), $sub_array) ); // numeric value as glue, pieces as array containg sub array var_dump( join(2, $sub_array) ); // using directly the sub_array as pieces var_dump( join(", ", $sub_array[0]) ); var_dump( join(", ", $sub_array[1]) ); echo "Done\n"; ?> --EXPECTF-- *** Testing implode() : usage variations - sub arrays *** Notice: Array to string conversion in %s on line %d Notice: Array to string conversion in %s on line %d string(27) "ArrayTESTArrayTESTPHPTEST50" Notice: Array to string conversion in %s on line %d string(19) "1Array2Array3Array4" Notice: Array to string conversion in %s on line %d Notice: Array to string conversion in %s on line %d string(18) "Array2Array2PHP250" string(10) "1, 2, 3, 4" string(8) "one, two" Done