1.change 'serialize/unserialize' to 'json_encode/json_deconde' for better performance;
2.add 'uniqkey' and 'data' to xhprof_data for reading by other log parsers;
This request has no data to support the claim that JSON is faster than serialize(), or that the performance of serialize() or unserialize() is significant enough to motivate improving.
1.change 'serialize/unserialize' to 'json_encode/json_deconde' for better performance; 2.add 'uniqkey' and 'data' to xhprof_data for reading by other log parsers;