How does php obtain the data in json transmitted by post!

How does php obtain the data in json transmitted by post! The above is the json data transmitted in post mode;
How does php receive and save the data to the database?
Please advise !!

Reply to discussion (solution)

$ _ POST
If the data received by php is decoded using json_decode, if it is not UTF-8 encoded, it must be converted to UTF-8.

If no value exists in $ _ POST, use file_get_contents ('php: // input') to receive the message (as described in the manual)

I am a newbie. could you give me an example!

$ Arr = json_decode ($ _ POST ['json'], true); print_r ($ arr); it's an array. it's easy to save the database.

I did my research and got it done. The post cannot get the data, and the input is used.

$ Data = file_get_contents ("php: // input"); // get json data $ data = json_decode ($ data, TRUE ); // format $ a1 = $ data ['form']; $ a2 = $ data ['entry '] ['Field _ 1']; $ sql1 = "insert into xxx (a1, a2) values ('$ A1',' $ a2 ')";