Convert javascript array into a php unserializable string

Question

I need to convert a javascript array into a string readable by php "unserialize".

In my javascript, I have:

var params = {};
params['showTitle'] = 0;
params['class'] = '';
params['ajax'] = 0;
params['ajaxDom'] = '';
params['what'] = 'defi';
params['color'] = 'dark';

The output I really need to get is this :

a:6:{s:9:"showTitle";i:0;s:5:"class";s:0:"";s:4:"ajax";i:0;s:7:"ajaxDom";s:0:"";s:4:"what";s:4:"defi";s:5:"color";s:4:"dark";}

Why do I need this? because the output is red on the server side (with php function unserialize) and I cannot change this (it's part of a framework).

My question is : how to convert the javascript array? I've tried (but didn't work):

params = JSON.stringify(params);
params = $.param(params);

It should be easy but I'm stuck... Thank you !

Can't you put in another PHP script in between? Seems rather complicated to simulate PHP's serialize(), when there is JSON ... — Sirko
– Sirko, Commented Sep 3, 2014 at 19:59
FYI: Letting unserialize loose on parameters coming from the outside is not recommended – it can be a security risk, because it can under certain conditions be used to initiate objects from classes in the script. A framework should not be doing this in the first place. — C3roe
– C3roe, Commented Sep 3, 2014 at 20:01
Sirko: I might, I need to try... CBroe: it's Base64 encode as well! I hope it make things safer ?!?! — Siouw
– Siouw, Commented Sep 3, 2014 at 20:07

Sunand · Accepted Answer · 2014-09-03 19:58:36Z

1

Please see if u can make use of this

http://phpjs.org/functions/serialize/

answered Sep 3, 2014 at 19:58

Sunand

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Siouw Over a year ago

I can't get it works :( But I think I might try jstice4all's solution.

jstice4all · Accepted Answer · 2014-09-03 20:04:56Z

1

Just send that js array to the server as JSON, then parse it with json_decode and serialize it with serialize function. Then you can unserialize it.

answered Sep 3, 2014 at 20:04

jstice4all

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4 Comments

Siouw Over a year ago

But I can't change the php part :(

ThatOneDude Over a year ago

But can you insert a intermediate php part into the the flow? Seems like you can, the javascript is sending it off somewhere, it could send it off to the intermediate php script as suggested before that intermediate php script sends it to the place javascript was sending.

jstice4all Over a year ago

Ok. Then Sunand's answer is more suitable in your case.

Siouw Over a year ago

ssnobody: Oh right :) I really need some sleep... sorry! jstice4all: I'll try that first thing tomorrow morning! thx

Xaxis · Accepted Answer · 2014-09-03 20:48:39Z

0

This function/answer assumes a lot: mainly that the only two types of data in your JavaScript "array" will be integers and strings, none the less it produces the type of output you demonstrated that the PHP unserialize function requires.

var params = {};
params['showTitle'] = 0;
params['class'] = '';
params['ajax'] = 0;
params['ajaxDom'] = '';
params['what'] = 'defi';
params['color'] = 'dark';

function jsArrToPhpSerializedString( arrObj ) {
  var str_parts = ['', '', '}'],
      arrLen = 0,
      ret = '';

  for (var prop in arrObj) {
    var val = arrObj[prop];
    arrLen += 1;
    str_parts[1] += 's:' + prop.length + ':"' + prop + '";';
    if (typeof val == 'number') {
      str_parts[1] += 'i:' + val + ';';
    } else if (typeof arrObj[prop] == 'string') {
      val = (!val) ? '""' : '"' + val + '"';
      str_parts[1] += 's:' + arrObj[prop].length + ':' + val + ';';
    }
  }

  str_parts[0] = 'a:' + arrLen + ':{';
  ret = str_parts.join('');
  return ret;
}

console.log( jsArrToPhpSerializedString(params) );
// "a:6:{s:9:"showTitle";i:0;s:5:"class";s:0:"";s:4:"ajax";i:0;s:7:"ajaxDom";s:0:"";s:4:"what";s:4:"defi";s:5:"color";s:4:"dark";}"

answered Sep 3, 2014 at 20:48

Xaxis

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2 Comments

Siouw Over a year ago

It's exactly, absolutely, perfectly what I needed... works like a charm ! Thank youuuuuuuuu

Xaxis Over a year ago

No problem. Just beware of the type pitfalls I mentioned.

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