How to receive special character?

Question

I am sending below data from textarea:

<?php
for ($x=0; $x<=10; $x++)
  {
  echo "The number is: $x <br>";
  }
?>

But when I get the data from the client on server it becomes like below. It escapes the ++

sign which is special character.

<?php
for ($x=0; $x<=10; $x)
  {
  echo "The number is: $x <br>";
  }
?>

How to get data as it is sent?

Why are you appending to the same file straight after appending to it once? — Popnoodles, Dec 07 '13 at 06:54
Bro i am appending the file in the format like code : and after that recieved code — , Dec 07 '13 at 06:55
There's nothing in this code that shows what is alerted (what data is sent back to the ajax). Are you alerting "The number is: $x The number is: $x The number is: $x"? — Popnoodles, Dec 07 '13 at 06:55
If the php is _as is_ inside the textarea it would be a string, and therefore won't execute but treated as such. It seems like yours is the expected behaviour: you send a string code, you get a string code — Damien Pirsy, Dec 07 '13 at 06:55
What's wrong with this? `file_put_contents($myfile,"code: ".$code."\n",FILE_APPEND);` — Popnoodles, Dec 07 '13 at 06:56
I am just saying that i want to send the for loop like "; } ?>but it received as "; } ?> ignore the other part — Sanjay Rathod, Dec 07 '13 at 06:59
you can see form here - http://web.guru99.com/ the code editor on web.guru99.com is my text area if i am insert for loop there then it escape ++ sign so it goes to infinite loop — Sanjay Rathod, Dec 07 '13 at 07:16
++ is not special in any way. Do you have code on the server which processes the posted code before it is executed? Please post that. — Wolfgang Stengel, Dec 07 '13 at 07:23
@WolfgangStengel Not quite true. A plus symbol dictates a space for GET requests. — Daedalus, Dec 07 '13 at 07:28
@Daedalus Right. I was assuming he would let a regular form post it. Nice catch with very few information. — Wolfgang Stengel, Dec 07 '13 at 07:33
possible duplicate of [++ sign gets skipped. How to tackle this?](http://stackoverflow.com/questions/20439017/sign-gets-skipped-how-to-tackle-this) — Popnoodles, Dec 07 '13 at 07:55

score 1 · Answer 1 · edited May 23 '17 at 12:29

1

Submitting raw input with a plus sign via HTTP GET will cause the plus sign to not be sent. It is a reserved character. See here.

Your old code built the GET request by hand like so:

var code = "code=" + code;
$.ajax({
  // ...
  data: code,
  /// ...
});

But you never used encodeURIComponent(code), thus causing your plus signs to be lost to the gaping jaws of the specification.

var code = "code=" + encodeURIComponent(code);

jQuery will do this automatically though if you pass it a plain object. Building urls is annoying, so this is the pattern I prefer:

$.ajax({
  // ...
  data: {
    code: code
  },
  /// ...
});

edited May 23 '17 at 12:29

Community

1
1

answered Dec 07 '13 at 07:28

Jackson

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Yours is the better answer, so, +1. – Daedalus Dec 07 '13 at 07:34
Sorry that I "stole" your answer :*) Yours didn't appear for me until right after I posted mine. – Jackson Dec 07 '13 at 07:38
It was deleted as I was unable to replicate the problem, until I fixed a few variables in the first bit of code given. So no harm there. – Daedalus Dec 07 '13 at 07:39

Daedalus · Answer 2 · 2013-12-07T07:27:34.257

With no comments on the rest of your code, you are executing a GET request.. For url encoding, a + sign is equal to a space. But if you want to retain those plus signs(+) upon the submission of the data.. you must url encode the string. There is a function for this, encodeURIComponent(str). I would suggest you use that. That aside, be careful what you evaluate php wise.

Normally, the form would take care of this for you, but since you are circumventing that action, this is one of the fixes.

How to receive special character?

2 Answers2