--TEST-- Test json_encode() function : error conditions --SKIPIF-- <?php if (!extension_loaded("json")) print "skip"; ?> --FILE-- <?php echo "*** Testing json_encode() : error conditions ***\n"; echo "\n-- Testing json_encode() function with no arguments --\n"; var_dump(json_encode()); echo "\n-- Testing json_encode() function with more than expected no. of arguments --\n"; $extra_arg = 10; var_dump(json_encode("abc", 0, $extra_arg)); ?> ===Done=== --EXPECTF-- *** Testing json_encode() : error conditions *** -- Testing json_encode() function with no arguments -- Warning: json_encode() expects at least 1 parameter, 0 given in %s on line %d NULL -- Testing json_encode() function with more than expected no. of arguments -- string(5) ""abc"" ===Done===