Mobile Site 1.0 - Saving data in a Mixed question (Support #3449)

Of course system will not save so strange data
Example:

This is question description from API:

{"id":"4","result": {"code":"8002","question": {"q": {
"num":"1","id":"63941","text":"Close Mixed Question","multi":false,"qtype":"3","open_type":"1",
"answers":[ {"num":1,"text":"1","a_id":378515,"answered":0}, {"num":2,"text":"2","a_id":378516,"answered":0}, {"num":3,"text":"3","a_id":378517,"answered":0}, {"num":4,"text":"4","a_id":378518,"answered":0}, {"num":5,"text":"5","a_id":378519,"answered":0}, {"num":6,"text":"","a_id":378520,"answered":0,"label":"Other"}
]
},"type":"11"
},"currentIndex":1
}
}

This is veri interesting "answer" from mobile site:

/survey_engine/se_sabi.php?&sabi_id=5&
sabi_type=11&
h_questiontypeid={"63941":"3"}&
h_questionid={"63941":"63941"}&
currentIndex=1&
h_ismulti={"63941":"0"}&
answers_id={"63941":{"1":"378515""2":"378516""3":"378517""4":"378518""5":"378519""6":"378520"}}&
sabi_sid=8bef7c42a61e591c386e387611516c21&sabi_ac=next&openanswer={"63941":""}&answers={"63941":"1"}

Please fix next:
1. & must not be first simbol in request. Part "se_sabi.php?&sabi_id=5&" is incorrect by any standarts! Must be se_sabi.php?sabi_id=5&"
2. When you use JSON you must use "," for separate list of elements!
answers_id={"63941":{"1":"378515""2":"378516""3":"378517""4":"378518""5":"378519""6":"378520"}}& - is not list! This is something very strange. Must be
answers_id={"63941":{"1":"378515","2":"378516","3":"378517","4":"378518","5":"378519","6":"378520"}}&

Example for 3 answers 2 closed and one open. seem like a correct request:
sabi_id=6&sabi_type=12
&h_questiontypeid={"63942":"3"}
&h_questionid={"63942":"63942"}
&currentIndex=2&h_ismulti={"63942":"1"}
&sabi_sid=7181091092d312dc32cb7980418df983&sabi_ac=next
&openanswer={"63942":{"6":"NADAV"}}
&answers={"63942":{"2":"378522","4":"378524"}}

Yes, answer to Q2 is correct, but answer to Q1 is incorrect.
/survey_engine/se_sabi.php?&sabi_id=5&sabi_type=11&h_questiontypeid={"63941":"3"}&h_questionid={"63941":"63941"}&currentIndex=1&h_ismulti={"63941":"0"}&answers_id={"63941":{"1":"378515","2":"378516","3":"378517","4":"378518","5":"378519","6":"378520"}}&sabi_sid=b54a6a9bacfd28e7b061bf1462790dab&sabi_ac=next&openanswer={"63941":{"378520":"other_answer 1"},}&answers={"63941":"378520"}&openanswer={"63941":""}&answers={"63941":"6"}

1. 2 times &openanswer=""
2. Incorrect format for first &openanswer={"63941":{"378520":"other_answer 1"},}

redundant "coma"
answer_id instead of answer_num. Must be
....
&openanswer={QUESTION_ID:{OPEN_ANSWER_NUM:ENTERED_OPEN_ANSWER_TEXT}},
...

&openanswer={"63941":{"6":"other_answer 1"}}

I explained that all information gathered and saved to database after last question. If part of has incorrect data it could corrupt part of SQL. Like now
I’ll try to make example of exactly this problem code tomorrow.

To put this aside - now on I can’t pass mixed list (11),
I get :
[code] ⇒ 7021
[message] ⇒ openanser error format
This wasn’t happening before.

OK the DATA seemed ok, but now there’s some problem that gives an empty question again:
Project is "MixedQuestions"

1. Answer Q1 with some open answer (doesn’t matter what. I wrote "F U A hole"
2. Click next
3. Answer Q2 with answer 2,3, and also the open answer (I wrote "Oh yah? F U!"
4. Click next
5. Get an empty question.