Thinkphp failed to modify database data

{Code...} my modified function code is as above, and the value of the $ room_info object is printed. it is indeed modified, but why does the database data remain unchanged after execution. Why?

Public function update () {$ room = M ('Room '); // $ room_id = $ _ GET ['room _ id']; $ room_id = $ _ POST ['room _ id']; $ roominfo ['room _ id'] = $ _ POST ['room _ id']; $ roominfo ['room _ type'] =_ _ POST ['room _ type']; $ roominfo ['room _ status'] = $ _ POST ['room _ status']; $ room _ area] = $ _ POST ['room _ area ']; $ roominfo ['room _ cost'] = $ _ POST ['room _ cost']; $ roominfo ['description'] = $ _ POST ['description']; print_r ($ roominfo); // $ room-> where ("room_id = $ room_id")-> save ($ roominfo ); echo "script" alert ('modified successfully') script "; // $ this-> redirect (" showRoom ");}

My modified function code is as follows: the value of the $ room_info object is printed and indeed modified. But why does the database data remain unchanged after execution. Why?

Reply content:

Public function update () {$ room = M ('Room '); // $ room_id = $ _ GET ['room _ id']; $ room_id = $ _ POST ['room _ id']; $ roominfo ['room _ id'] = $ _ POST ['room _ id']; $ roominfo ['room _ type'] =_ _ POST ['room _ type']; $ roominfo ['room _ status'] = $ _ POST ['room _ status']; $ room _ area] = $ _ POST ['room _ area ']; $ roominfo ['room _ cost'] = $ _ POST ['room _ cost']; $ roominfo ['description'] = $ _ POST ['description']; print_r ($ roominfo); // $ room-> where ("room_id = $ room_id")-> save ($ roominfo ); echo "script" alert ('modified successfully') script "; // $ this-> redirect (" showRoom ");}

My modified function code is as follows: the value of the $ room_info object is printed and indeed modified. But why does the database data remain unchanged after execution. Why?

// $ Room-> where ("room_id = $ room_id")-> save ($ roominfo );

Do you want to remove the annotator...

In addition: "room_id = $ room_id", the landlord can Baidu SQL injection.

M ()-> getLastsql ()

It should bethinkphp.

1. Do not directly use$_POSTOr use$_GetTo preventSQL injection, Should be usedIFunction.

2. SQL debugging should be used$obj->getLastsql()Method.

3. Output objectdumpFunction.

If the code is okay, it may also be a problem with your database. for example, if your account does not have the write permission, you can read the database and cannot perform the update operation. First, check for any problems.

1. Print M ()-> getLastsql () if possible ()

2. If your room_id is the primary key of the table, you can use the following code:

   $roominfo['room_id']=$_POST['room_id'];$roominfo['room_type']=$_POST['room_type'];$roominfo['room_status']=$_POST['room_status'];$roominfo['room_area']=$_POST['room_area'];$roominfo['room_cost']=$_POST['room_cost'];$roominfo['description']=$_POST['description'];$room->save($roominfo);

$ Room-> where ("room_id =". $ room_id)-> save ($ roominfo );

Let's try again.

Add this sentence under $ room_id: $ roominfo = $ room-> getByID ($ room_id );