Send JSON object as string not array

Question

I have a string that looks like this

{ "name":"John", "age":30, "city":"New York"}

I want to post it to a PHP file exactly in the format as seen above, not as an array. The reason is that I will later use this string somewhere else, and I have no need to implode it or reformat it.

Here is what I have now.

var sentdata = '{ "name":"John", "age":30, "city":"New York"}';

$.ajax({
    url: 'save.php',
    type: 'post',
    data: sentdata,
    success:function(response){
    console.log('Updated'); 
    }

});

PHP is currently outputting this:

Array ( [{"name":"John","age":30,_"city":"New_York"}] => )

But I wanted a basic string that looks exactly like in sentdata.

I prefer a Jquery/JSON solution, but if I have to do something in PHP then so be it.

Thanks!

You need to JSON.stringify() the sentdata, and set the contentType: 'json' on the request — Taplar
– Taplar, Commented Apr 24, 2019 at 15:29
You should receive the data just the way you sent it, post your save.php to see why the data was transformed. — Musa
– Musa, Commented Apr 24, 2019 at 15:30
I can hardly imagine where you can use json object as string though. — u_mulder
– u_mulder, Commented Apr 24, 2019 at 15:35
@Taplar sentdata is already a string and the correct content type is application/json — Musa
– Musa, Commented Apr 24, 2019 at 15:35

XPS · Accepted Answer · 2019-04-24 15:33:58Z

2

The code should look this, notice the change to JS code

data: {data: sentdata}

var sentdata = '{ "name":"John", "age":30, "city":"New York"}';

$.ajax({
    url: 'save.php',
    type: 'post',
    data: {data: sentdata},
    success:function(response){
    console.log('Updated'); 
    }

});

Then you have string variable in PHP code:

$_POST["data"]

answered Apr 24, 2019 at 15:33

XPS

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Comments

Quentin · Accepted Answer · 2019-04-24 15:35:57Z

1

You haven't set the Content-Type of the request, so PHP thinks you are sending application/x-www-form-urlencoded data.

Since your string doesn't have an = in it, it treats this as a key without a value and populates $_POST with that data.

You need to set the Content Type request header explicitly.

$.ajax({
    url: 'save.php',
    contentType: "application/json",
    // etc

However PHP will not automatically process JSON encoded requests. $_POST will be empty.

You need to parse the JSON manually as described in this question.

answered Apr 24, 2019 at 15:35

Quentin

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Comments

imvain2 · Accepted Answer · 2019-04-24 15:35:12Z

0

You can still send as an object, but add the string as the value itself.

var sentdata = ['data' : '{"name":"John", "age":30, "city":"New York"}'];

Then just access it as $_POST["data"]

edited Apr 24, 2019 at 15:35

answered Apr 24, 2019 at 15:30

imvain2

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2 Comments

Musa Over a year ago

Uncaught SyntaxError: Malformed arrow function parameter list

u_mulder Over a year ago

Not correct js syntax, it should be var sentdata = {data: '...'}

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