PHP doesn't echo the correct variable from array

Question

So,I send an array of inputs:

<input type="text" placeholder="Question" name="question[]"  value="" />
<input type="text" placeholder="Question" name="question[]"  value="" />

with this Jquery code:

    $.post("function.php",{Question:$("[name^='question']").serialize()},function(data){
    $("#construct").append(data);
    alert('done');
});

but when I try to echo the variables of array it prints incorrect PHP(function.php):

$Question=htmlentities($_POST['Question'],ENT_QUOTES,"UTF-8");
echo $Question[0]."<br>";
echo $Question[1]."<br>";

Now imagine that we enter "Hello" and "Bye" in the input So it should return "Hello" and "Bye" but it returns "q" and "u" instead.

The var_dump out put is:

string(39) "question%5B%5D=Hello&question%5B%5D=Bye"

Edit 1

if I use .serialize() I always get "q" and "u" but if I use .val() I get the first and second letter of each word

Edit 2

I even tried the PHP code without htmlentities() but the result is the same as before.

Show the output of var_dump(($_POST['Question']); in your question — John Conde
– John Conde, Commented Sep 6, 2015 at 14:51

P. Jensen · Accepted Answer · 2015-09-06 15:57:36Z

1

You serialized your input in JavaScript so the input coming in PHP is a string, not an array. So you need to decode it into an array. Using JSON is a good approach.

EXAMPLE for the lazy:

JavaScript

var normalArray = $('#FormID').serializeArray();
var jsonArray = JSON.stringify(normalArray);
$.post("function.php",{
  data: jsonArray
});

PHP

$normalArray = json_decode($_POST['data'], true);

This example is not tested, but it should work in general.

edited Sep 6, 2015 at 15:57

answered Sep 6, 2015 at 15:12

P. Jensen

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8 Comments

NavidIvanian Over a year ago

So,What can I use instead of .serialize()??

P. Jensen Over a year ago

use JSON.stringify( my_array ) in javascript my friend. And in PHP you do json_decode($_POST['question'], true). Here: stackoverflow.com/questions/6937144/… php.net/manual/en/function.json-decode.php

P. Jensen Over a year ago

So you stringify your data in JavaScript to Json, send it to PHP, decode the Json into an array, go mark P. jensen's anwser as a good anwser. And he saw that everything was well.

P. Jensen Over a year ago

Dude, don't be lazy. If you don't learn it by researching and writing it yourself, you will never remember it. Use the links I gave you.

NavidIvanian Over a year ago

Can I use JSON.stringify() in Jquery.post??

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